הלכות עירובין ו׳Eruvin 6

Halacha 1א׳

מִי שֶׁיָּצָא מִן הַמְּדִינָה בְּעֶרֶב שַׁבָּת וְהִנִּיחַ מְזוֹן שְׁתֵּי סְעֻדּוֹת רָחוֹק מִן הַמְּדִינָה בְּתוֹךְ הַתְּחוּם וְקָבַע שְׁבִיתָתוֹ שָׁם. אַף עַל פִּי שֶׁחָזַר לַמְּדִינָה וְלָן בְּבֵיתוֹ נֶחְשָׁב אוֹתוֹ כְּאִלּוּ שָׁבַת בְּמָקוֹם שֶׁהִנִּיחַ בּוֹ שְׁתֵּי הַסְּעֻדּוֹת. וְזֶה הוּא הַנִּקְרָא עֵרוּבֵי תְּחוּמִין:

[In a case of] one who left the city on the eve of Shabbat and left food for two meals [at a] distance from the city within its perimeter and established his resting there: Even though he returned to the city, it is considered as if he rested in that place in which he left his two meals. And that is called eruvei techumin (eruvs of perimeters).

Halacha 2ב׳

וְיֵשׁ לוֹ לְהַלֵּךְ מִמְּקוֹם עֵרוּבוֹ לְמָחָר אַלְפַּיִם אַמָּה לְכָל רוּחַ. לְפִיכָךְ כְּשֶׁהוּא מְהַלֵּךְ מִמְּקוֹם עֵרוּבוֹ לְמָחָר אַלְפַּיִם אַמָּה כְּנֶגֶד הַמְּדִינָה אֵינוֹ מְהַלֵּךְ בַּמְּדִינָה אֶלָּא עַד סוֹף מִדָּתוֹ. וְאִם הָיְתָה הַמְּדִינָה מֻבְלַעַת בְּתוֹךְ מִדָּתוֹ תֵּחָשֵׁב הַמְּדִינָה כֻּלָּהּ כְּאַרְבַּע אַמּוֹת וְיַשְׁלִים מִדָּתוֹ חוּצָה לָהּ:

And on the morrow, he has two thousand ells to walk in every direction from the place of his eruv. Hence when he walks from the place of his eruv towards the city on the morrow, he may only walk in the city up to the end of his allotment. But if the city was subsumed in his allotment, the whole city is considered like four ells, and he completes his allotment beyond it.

Halacha 3ג׳

כֵּיצַד. הֲרֵי שֶׁהִנִּיחַ אֶת עֵרוּבוֹ בְּרִחוּק אֶלֶף אַמָּה מִבֵּיתוֹ שֶׁבַּמְּדִינָה לְרוּחַ מִזְרָח נִמְצָא מְהַלֵּךְ לְמָחָר מִמְּקוֹם עֵרוּבוֹ אַלְפַּיִם אַמָּה לְמִזְרָח. וּמְהַלֵּךְ מִמְּקוֹם עֵרוּבוֹ אַלְפַּיִם אַמָּה לְמַעֲרָב. אֶלֶף שֶׁמִּן הָעֵרוּב עַד בֵּיתוֹ וְאֶלֶף אַמָּה מִבֵּיתוֹ בְּתוֹךְ הַמְּדִינָה. וְאֵינוֹ מְהַלֵּךְ בַּמְּדִינָה אֶלָּא עַד סוֹף הָאֶלֶף. הָיָה מִבֵּיתוֹ עַד סוֹף הַמְּדִינָה פָּחוֹת מֵאֶלֶף אֲפִלּוּ אַמָּה אַחַת שֶׁנִּמְצֵאת מִדָּתוֹ כָּלְתָה חוּץ לַמְּדִינָה תֵּחָשֵׁב הַמְּדִינָה כֻּלָּהּ כְּאַרְבַּע אַמּוֹת וִיהַלֵּךְ חוּצָה לָהּ תְּשַׁע מֵאוֹת שֵׁשׁ וְתִשְׁעִים אַמָּה תַּשְׁלוּם הָאַלְפַּיִם:

How is that? [If] he placed his eruv a distance of a thousand ells towards the east from his house in the city: It comes out that on the morrow, he may walk two thousand ells to the east from the place of his eruv. And he may walk two thousand ells to the west from the place of his eruv — one thousand from his eruv to his house; and one thousand ells from his house, inside the city. But he may only walk in the city to the end of [that] thousand. [However, if] there was even one ell less than a thousand from his house to the end of the city — coming out that his allotment ends outside of the city — the whole city is considered like four ells. So he may walk nine hundred and ninety-six ells outside of it [as the] completion of his two thousand.

Halacha 4ד׳

לְפִיכָךְ אִם הִנִּיחַ עֵרוּבוֹ בְּרִחוּק אַלְפַּיִם אַמָּה מִבֵּיתוֹ שֶׁבַּמְּדִינָה הִפְסִיד אֶת כָּל הַמְּדִינָה כֻּלָּהּ. וְנִמְצָא מְהַלֵּךְ מִבֵּיתוֹ עַד עֵרוּבוֹ אַלְפַּיִם אַמָּה וּמֵעֵרוּבוֹ אַלְפַּיִם וְאֵינוֹ מְהַלֵּךְ מִבֵּיתוֹ בַּמְּדִינָה לְרוּחַ מַעֲרָב אֲפִלּוּ אַמָּה אַחַת. הַמַּנִּיחַ עֵרוּבוֹ בִּרְשׁוּת הַיָּחִיד אֲפִלּוּ הָיְתָה מְדִינָה גְּדוֹלָה כְּנִינְוֵה וַאֲפִלּוּ עִיר חֲרֵבָה אוֹ מְעָרָה הָרְאוּיָה לְדִיּוּרִין מְהַלֵּךְ אֶת כֻּלָּהּ וְחוּצָה לָהּ אַלְפַּיִם אַמָּה לְכָל רוּחַ:

Hence if he placed his eruv a distance of two thousand ells from his house in the city, he would have lost the whole city (in the opposite direction). So it comes out that he may walk two thousand ells from his house to his eruv and two thousand from his eruv [outwards]. But he may not walk from his house in the city to the west even one ell. One who places his eruv in a private domain — even if it was a large city like Nineveh, and even if it was a ruined city or a cave fitting for domiciles — may walk [though] all of it and two thousand ells in every direction.

Halacha 5ה׳

הַמַּנִּיחַ עֵרוּבוֹ בְּתוֹךְ הַמְּדִינָה שֶׁשָּׁבַת בָּהּ לֹא עָשָׂה כְּלוּם וְאֵין מוֹדְדִין לוֹ מִמְּקוֹם עֵרוּבוֹ אֶלָּא הֲרֵי הוּא כִּבְנֵי הַמְּדִינָה כֻּלָּן שֶׁיֵּשׁ לָהֶן אַלְפַּיִם אַמָּה לְכָל רוּחַ חוּץ לַמְּדִינָה. וְכֵן אִם נָתַן עֵרוּבוֹ בַּמְּקוֹמוֹת הַמִּצְטָרְפִין לָעִיר שֶׁמּוֹדְדִין הַתְּחוּם חוּץ מֵהֶם הֲרֵי זֶה כְּנוֹתְנוֹ בְּתוֹךְ הָעִיר. נָתַן עֵרוּבוֹ חוּץ לַתְּחוּם אֵינוֹ עֵרוּב:

One who places his eruv within the city in which he rested (spent Shabbat) did not do anything, and we do not measure for him from the place of his eruv. Rather he is like all of the residents of the city, who have two thousand ells in every direction outside of the city. And likewise if he placed his eruv in places that combine with the city — such that we [start] measuring the perimeter outside of them — it is surely as if he placed it within the city. If he placed his eruv outside of the perimeter, it is nothing.

Halacha 6ו׳

אֵין מְעָרְבִין עֵרוּבֵי תְּחוּמִין אֶלָּא לִדְבַר מִצְוָה כְּגוֹן שֶׁהָיָה רוֹצֶה לֵילֵךְ לְבֵית הָאָבֵל אוֹ לְמִשְׁתֶּה שֶׁל נִשּׂוּאִין אוֹ לְהַקְבִּיל פְּנֵי רַבּוֹ אוֹ חֲבֵרוֹ שֶׁבָּא מִן הַדֶּרֶךְ וְכַיּוֹצֵא בְּאֵלּוּ. אוֹ מִפְּנֵי הַיִּרְאָה כְּגוֹן שֶׁהָיָה רוֹצֶה לִבְרֹחַ מִן הָעוֹבְדֵי כּוֹכָבִים אוֹ מִן הַלִּסְטִים וְכַיּוֹצֵא בָּזֶה. וְאִם עֵרֵב שֶׁלֹּא לְאֶחָד מִכָּל אֵלּוּ אֶלָּא לְדִבְרֵי הָרְשׁוּת הֲרֵי זֶה עֵרוּב:

We only make a perimeter eruv for the matter of a commandment, such as [if] one wanted to walk to a mourner's house or to a wedding party or to greet the presence of his rabbi or his friend that is coming from a journey and that which is similar to these; or on account of fear, such as [if] he wanted to escape from idolaters or brigands and that which is similar to this. But if it was not for one of all these [reasons] that he made an eruv, but rather for optional matters — it is surely [still] an eruv.

Halacha 7ז׳

כָּל שֶׁמִּשְׁתַּתְּפִין בּוֹ מְעָרְבִין בּוֹ עֵרוּבֵי תְּחוּמִין. וְכָל שֶׁאֵין מִשְׁתַּתְּפִין בּוֹ אֵין מְעָרְבִין בּוֹ תְּחוּמִין. וְכַמָּה שִׁעוּר עֵרוּבֵי תְּחוּמִין מְזוֹן שְׁתֵּי סְעֻדּוֹת לְכָל אֶחָד וְאֶחָד. וְאִם הָיָה לִפְתָּן כְּדֵי לֶאֱכל בּוֹ שְׁתֵּי סְעֻדּוֹת. כְּמוֹ הַשִּׁתּוּף:

We may make a perimeter eruv with anything with which we make a shituf (an eruv for an alley). And we may not make a perimeter eruv with anything with which we do not make a shituf. And what is the [requisite] amount for a perimeter eruv? Food for two meals for each and every one. But if [the food] was an accompaniment, enough to eat two meals with it — as with the shituf.

Halacha 8ח׳

וְצָרִיךְ שֶׁיִּהְיֶה הוּא וְעֵרוּבוֹ בְּמָקוֹם אֶחָד כְּדֵי שֶׁיִּהְיֶה אֶפְשָׁר לוֹ לְאָכְלוֹ בֵּין הַשְּׁמָשׁוֹת. לְפִיכָךְ אִם נִתְכַּוֵּן לִשְׁבֹּת בִּרְשׁוּת הָרַבִּים וְהִנִּיחַ עֵרוּבוֹ בִּרְשׁוּת הַיָּחִיד. אוֹ בִּרְשׁוּת הַיָּחִיד וְהִנִּיחַ עֵרוּבוֹ בִּרְשׁוּת הָרַבִּים אֵינוֹ עֵרוּב. שֶׁאִי אֶפְשָׁר לוֹ לְהוֹצִיא מֵרְשׁוּת הַיָּחִיד לִרְשׁוּת הָרַבִּים בֵּין הַשְּׁמָשׁוֹת אֶלָּא בַּעֲבֵרָה:

And he and his eruv must be in one place, in order that it would be possible for him to eat it at twilight (at the beginning of Shabbat). Hence if he intends to rest (spend Shabbat) in a public domain and placed his eruv in a private domain; or in a private domain and placed his eruv in a public domain, it is not an eruv — as it is impossible to transport [it] from the private domain to the public domain at twilight except by sinning.

Halacha 9ט׳

אֲבָל אִם נִתְכַּוֵּן לִשְׁבֹּת בִּרְשׁוּת הַיָּחִיד אוֹ בִּרְשׁוּת הָרַבִּים וְהִנִּיחַ עֵרוּבוֹ בְּכַרְמְלִית. אוֹ שֶׁנִּתְכַּוֵּן לִשְׁבֹּת בְּכַרְמְלִית וְהִנִּיחַ עֵרוּבוֹ בִּרְשׁוּת הַיָּחִיד אוֹ בִּרְשׁוּת הָרַבִּים הֲרֵי זֶה עֵרוּב. שֶׁבִּשְׁעַת קְנִיַּת הָעֵרוּב שֶׁהוּא בֵּין הַשְּׁמָשׁוֹת מֻתָּר לְהוֹצִיא וּלְהַכְנִיס מִכָּל אַחַת מִשְּׁתֵּי הָרְשׁוּיוֹת לְכַרְמְלִית לִדְבַר מִצְוָה. שֶׁכָּל דָּבָר שֶׁהוּא מִדִּבְרֵי סוֹפְרִים לֹא גָּזְרוּ עָלָיו בֵּין הַשְּׁמָשׁוֹת בִּמְקוֹם מִצְוָה אוֹ בִּשְׁעַת הַדְּחָק:

But if he intended to rest in a private domain or in a public domain and placed his eruv in a karmelit; or to rest in a karmelit and placed his eruv in a private domain or in a public domain, it is surely an eruv. For at the time of the eruv's acquisition — which is at twilight — it is permissible to transport out and into each one of these domains to a karmelit for the matter of a commandment. For [regarding] anything that is from the words of the Scribes (rabbinic), [the Sages] did not decree about it at twilight in the case of a commandment or at a time of duress.

Halacha 10י׳

נְתָנוֹ בְּמִגְדָּל וְנָעַל וְאָבַד הַמַּפְתֵּחַ אִם יָכוֹל לְהוֹצִיאוֹ בְּלֹא עֲשִׂיַּת מְלָאכָה הֲרֵי זֶה עֵרוּב. שֶׁאֵין אָסוּר לַעֲשׂוֹת בֵּין הַשְּׁמָשׁוֹת בִּמְקוֹם מִצְוָה אֶלָּא מְלָאכָה. נְתָנוֹ בְּרֹאשׁ הַקָּנֶה אוֹ הַקֻּנְדָּס הַצּוֹמְחִין מִן הָאָרֶץ אֵינוֹ עֵרוּב גְּזֵרָה שֶׁמָּא יִתְלֹשׁ. וְאִם הָיוּ תְּלוּשִׁין וּנְעוּצִין הֲרֵי זֶה עֵרוּב:

[If] one placed it in a closet and locked it, and [then] lost the key: If he is able to to extract it without doing a forbidden type of work, it is surely an eruv. For in the case of a commandment, the only thing that is forbidden at twilight is forbidden work. [Nevertheless,] if he placed it on top of a reed or on top of a pole which are growing from the ground, it is not an eruv, [as a] decree lest one detach. But if they were [already] detached and stuck [back into the ground], it is surely an eruv.

Halacha 11י״א

כָּל הַמַּנִּיחַ עֵרוּבוֹ יֵשׁ לוֹ בִּמְקוֹם עֵרוּבוֹ אַרְבַּע אַמּוֹת. לְפִיכָךְ הַמַּנִּיחַ עֵרוּבֵי תְּחוּמִין שֶׁלּוֹ בְּסוֹף הַתְּחוּם וְנִתְגַּלְגֵּל הָעֵרוּב וְיָצָא חוּץ לַתְּחוּם בְּתוֹךְ שְׁתֵּי אַמּוֹת הֲרֵי זֶה עֵרוּב וּכְאִלּוּ לֹא יָצָא מִמְּקוֹמוֹ. וְאִם יָצָא חוּץ לִשְׁתֵּי אַמּוֹת אֵינוֹ עֵרוּב שֶׁהֲרֵי נַעֲשָׂה חוּץ לַתְּחוּם וְהַמַּנִּיחַ עֵרוּבוֹ חוּץ לַתְּחוּם אֵינוֹ עֵרוּב מִפְּנֵי שֶׁאֵינוֹ יָכוֹל לְהַגִּיעַ אֶל עֵרוּבוֹ:

Anyone who places down his eruv gets four ells in the place of his eruv. Hence if one placed his perimeter eruv at the end of the perimeter and the eruv [then] rolled out of the perimeter within two ells, it is surely an eruv; and it is as if it did not go out of its place. But if it went out two ells [or more], it is not an eruv. For it has surely become outside of the perimeter; and the eruv of one who places it outside of the perimeter is not an eruv, since he may not reach his eruv.

Halacha 12י״ב

נִתְגַּלְגֵּל הָעֵרוּב וְיָצָא שְׁתֵּי אַמּוֹת חוּץ לַתְּחוּם אוֹ אָבַד אוֹ נִשְׂרַף אוֹ שֶׁהָיָה תְּרוּמָה וְנִטְמֵאת מִבְּעוֹד יוֹם אֵינוֹ עֵרוּב. מִשֶּׁחֲשֵׁכָה הֲרֵי זֶה עֵרוּב. שֶׁקְּנִיַּת הָעֵרוּב בֵּין הַשְּׁמָשׁוֹת. וְאִם סָפֵק הֲרֵי זֶה עֵרוּב שֶׁסְּפֵק הָעֵרוּב כָּשֵׁר. לְפִיכָךְ אִם נֶאֱכַל הָעֵרוּב בֵּין הַשְּׁמָשׁוֹת הֲרֵי זֶה עֵרוּב:

If while it was still day (before Shabbat) the eruv rolled and went two ells out of the perimeter or got lost or burnt or it was priestly tithe and became impure, it is not an eruv. [If one of these thing occurred] from when it got dark, it is an eruv — since the acquisition of the eruv is at twilight. And if it is a doubt, it is surely an eruv — as an eruv in doubt is fit. Hence, if the eruv was eaten at twilight, it is surely an eruv.

Halacha 13י״ג

אָמְרוּ לוֹ שְׁנַיִם צֵא וְעָרֵב עָלֵינוּ. אֶחָד עֵרֵב עָלָיו מִבְּעוֹד יוֹם וְאֶחָד עֵרֵב עָלָיו בֵּין הַשְּׁמָשׁוֹת. וְזֶה שֶׁעֵרֵב עָלָיו מִבְּעוֹד יוֹם נֶאֱכַל עֵרוּבוֹ בֵּין הַשְּׁמָשׁוֹת וְזֶה שֶׁעֵרֵב עָלָיו בֵּין הַשְּׁמָשׁוֹת נֶאֱכַל עֵרוּבוֹ מִשֶּׁחֲשֵׁכָה שְׁנֵיהֶם קָנוּ עֵרוּב. שֶׁבֵּין הַשְּׁמָשׁוֹת סָפֵק הוּא וּסְפֵק הָעֵרוּב כָּשֵׁר. אַף עַל פִּי כֵן סָפֵק חֲשֵׁכָה סָפֵק לֹא חֲשֵׁכָה אֵין מְעָרְבִין עֵרוּבֵי תְּחוּמִין לְכַתְּחִלָּה וְאִם עֵרֵב הֲרֵי זֶה עֵרוּב:

[In a case in which] two people said to one, "Go out and make an eruv for us," and he made an eruv for one while it was still day and made an eruv for [the other] at twilight; and the eruv for the one that he made while it was still day was eaten at twilight, and the eruv that he made at twilight was eaten from when it got dark: Both of them acquired an eruv, since twilight is a doubt (regarding whether it is already Shabbat) — and an eruv in doubt is fit. Nevertheless, we do not make an eruv at the outset [when there is] a doubt whether it got dark or did not get dark. But if one made an eruv [then], it is surely an eruv.

Halacha 14י״ד

נָפַל עַל הָעֵרוּב גַּל מִבְּעוֹד יוֹם אִם יָכוֹל לְהוֹצִיאוֹ בְּלֹא עֲשִׂיַּת מְלָאכָה הֲרֵי זֶה כָּשֵׁר שֶׁמֻּתָּר לְהוֹצִיאוֹ בֵּין הַשְּׁמָשׁוֹת שֶׁהִיא שְׁעַת קְנִיַּת הָעֵרוּב. וְאִם נָפַל עָלָיו גַּל מִשֶּׁחֲשֵׁכָה הֲרֵי זֶה עֵרוּב וְאַף עַל פִּי שֶׁאִי אֶפְשָׁר לְהוֹצִיאוֹ אֶלָּא בַּעֲשִׂיַּת מְלָאכָה. סָפֵק מִבְּעוֹד יוֹם נָפַל אוֹ מִשֶּׁחֲשֵׁכָה הֲרֵי זֶה כָּשֵׁר שֶׁסְּפֵק הָעֵרוּב כָּשֵׁר:

[If] a pile of rocks fell on the eruv while it was still day: If one is able to extract it without doing a forbidden type of work, it is surely fit — as it [would then be] permissible to extract it at twilight, which is the time of the eruv's acquisition. But if a pile of rocks fell upon it from when it got dark, it is surely an eruv — even though it is impossible to extract it without doing forbidden work. [If] there is a doubt whether it fell on it while it was still day or from when it got dark, it is certainly fit — as an eruv in doubt is fit.

Halacha 15ט״ו

אֲבָל אִם עֵרֵב בִּתְרוּמָה שֶׁהִיא סָפֵק טְמֵאָה אֵינוֹ עֵרוּב שֶׁאֵינָהּ סְעֻדָּה הָרְאוּיָה. וְכֵן אִם הָיוּ לְפָנָיו שְׁתֵּי כִּכָּרוֹת שֶׁל תְּרוּמָה אַחַת טְהוֹרָה וְאַחַת טְמֵאָה וְאֵינוֹ יוֹדֵעַ אֵי זוֹ הִיא מִשְּׁתֵּיהֶן וְאָמַר עֵרוּבִי בַּטְּהוֹרָה בְּכָל מָקוֹם שֶׁהוּא אֵינוֹ עֵרוּב. שֶׁאֵין כָּאן סְעֻדָּה הָרְאוּיָה לַאֲכִילָה:

But if one made an eruv with priestly tithe about which there is a doubt if it is impure, it is not an eruv — as it is not a fit meal. And likewise if there were two loaves of priestly tithe in front of him, one which was pure and one which was impure, but he does not know which one of the two it is and he says, "My eruv is in the pure one in whatever place it is" — it is not an eruv. For there is no meal fit for eating here.

Halacha 16ט״ז

אָמַר כִּכָּר זֶה הַיּוֹם חֹל וּלְמָחָר קֹדֶשׁ וְעֵרֵב בָּהּ הֲרֵי זֶה עֵרוּב. שֶׁבֵּין הַשְּׁמָשׁוֹת עֲדַיִן לֹא נִתְקַדְּשָׁה וַדַּאי וּרְאוּיָה הָיְתָה מִבְּעוֹד יוֹם. אֲבָל אִם אָמַר הַיּוֹם קֹדֶשׁ וּלְמָחָר חֹל אֵין מְעָרְבִין בָּהּ שֶׁאֵינָהּ רְאוּיָה עַד שֶׁתֶּחְשַׁךְ. וְכֵן אִם הִפְרִישׁ תְּרוּמָה וְהִתְנָה עָלֶיהָ שֶׁלֹּא תִּהְיֶה תְּרוּמָה עַד שֶׁתֶּחְשַׁךְ אֵין מְעָרְבִין בָּהּ. שֶׁהֲרֵי הִיא טֶבֶל כָּל בֵּין הַשְּׁמָשׁוֹת וְצָרִיךְ שֶׁתִּהְיֶה הַסְּעֻדָּה רְאוּיָה מִבְּעוֹד יוֹם:

[If] he said, "This loaf is mundane today, but will be sanctified tomorrow" and made an eruv with it, it is surely an eruv. For it had not yet become sanctified with certainty at twilight, so it was fitting [to eat] while it was still day. But if he said, "It is sanctified today, but mundane tomorrow" — we may not make an eruv with it — as it is not fitting until it gets dark. And likewise if he separates the priestly tithe but stipulates about it that it not be priestly tithe until it gets dark, we may not make an eruv with it. For it is surely untithed at twilight — and it needs to be a meal that is fit, from while it is still day.

Halacha 17י״ז

הַנּוֹתֵן עֵרוּבוֹ בְּבֵית הַקְּבָרוֹת אֵינוֹ עֵרוּב לְפִי שֶׁבֵּית הַקְּבָרוֹת אָסוּר בַּהֲנָיָה וְכֵיוָן שֶׁרוֹצֶה בְּקִיּוּם הָעֵרוּב שָׁם אַחַר קְנִיָּה הֲרֵי נֶהֱנֶה בּוֹ. נְתָנוֹ בְּבֵית הַפְּרָס הֲרֵי זֶה עֵרוּב וַאֲפִלּוּ הָיָה כֹּהֵן מִפְּנֵי שֶׁיָּכוֹל לִכָּנֵס שָׁם בְּמִגְדָּל הַפּוֹרֵחַ אוֹ שֶׁיְּנַפֵּחַ וְהוֹלֵךְ:

[In a case of] one who puts his eruv in a graveyard, it is not an eruv. For a graveyard is forbidden for benefit — and since he wants the preservation of the eruv there after the acquisition, he is certainly benefiting from it. [But if] he put it in a field containing a grave that was plowed over, it is surely an eruv — even if he was a priest — for he is able to enter there inside a 'flying closet,' or to blow (on the ground to make sure he is not stepping over a bone) and walk.

Halacha 18י״ח

רַבִּים שֶׁרָצוּ לְהִשְׁתַּתֵּף בְּעֵרוּבֵי תְּחוּמִין מְקַבְּצִין כֻּלָּן עֵרוּבָן שְׁתֵּי סְעֻדּוֹת לְכָל אֶחָד וְאֶחָד וּמַנִּיחִין אוֹתוֹ בִּכְלִי אֶחָד בְּמָקוֹם שֶׁיִּרְצוּ. וְאִם עָשָׂה אֶחָד עֵרוּב עַל יְדֵי כֻּלָּן צָרִיךְ לְזַכּוֹת לָהֶן עַל יְדֵי אַחֵר. וְצָרִיךְ לְהוֹדִיעָם שֶׁאֵין מְעָרְבִין לוֹ לָאָדָם עֵרוּבֵי תְּחוּמִין אֶלָּא לְדַעְתּוֹ שֶׁמָּא אֵינוֹ רוֹצֶה לְעָרֵב בְּאוֹתָהּ הָרוּחַ שֶׁרָצָה זֶה. וְאִם הוֹדִיעוֹ מִבְּעוֹד יוֹם אַף עַל פִּי שֶׁלֹּא רָצָה אֶלָּא מִשֶּׁתֶּחְשַׁךְ הֲרֵי זֶה עֵרוּב. וְאִם לֹא הוֹדִיעוֹ עַד שֶׁחֲשֵׁכָה אֵינוֹ יוֹצֵא בּוֹ שֶׁאֵין מְעָרְבִין מִשֶּׁתֶּחְשַׁךְ:

[If] many want to join in a perimeter eruv, they must all gather two meals for each and every one [for] their eruv, and place it in one vessel in the place that they want. And if one [of them] made it on behalf of all of them, he must acquire it for them though another person. And he must inform them — as we do not make a perimeter eruv for someone without their knowledge, lest he does not want to make an eruv in this direction that [the first one] wanted. And if he informed him from when it was still day, it is surely an eruv — even if [the latter] only wanted it from when it got dark. But if he did not inform him until it got dark, he may not go out [based on] it — as we may not make an eruv from when it gets dark.

Halacha 19י״ט

כָּל הַזּוֹכֶה בְּעֵרוּבֵי חֲצֵרוֹת מְזַכִּין עַל יָדוֹ בְּעֵרוּבֵי תְּחוּמִין. וְכָל מִי שֶׁאֵין מְזַכִּין עַל יָדוֹ עֵרוּבֵי חֲצֵרוֹת אֵין מְזַכִּין עַל יָדוֹ עֵרוּבֵי תְּחוּמִין:

A perimeter eruv may be acquired by anyone who may acquire a courtyard eruv. But anyone through whom we may not acquire a courtyard eruv, we may not acquire through him a perimeter eruv.

Halacha 20כ׳

נוֹתֵן אָדָם מָעָה לְבַעַל הַבַּיִת כְּדֵי שֶׁיִּקַּח לוֹ פַּת וִיעָרֵב לוֹ בָּהּ עֵרוּבֵי תְּחוּמִין. אֲבָל אִם נָתַן לְחֶנְוָנִי אוֹ לְנַחְתּוֹם וְאָמַר לוֹ זְכֵה לִי בְּמָעָה זוֹ אֵינוֹ עֵרוּב. וְאִם אָמַר לוֹ עַרֵב עָלַי בְּמָעָה זוֹ הֲרֵי זֶה לוֹקֵחַ בָּהּ פַּת אוֹ אֹכֶל מִן הָאֳכָלִין וּמְעָרֵב עָלָיו. וְאִם נָתַן לוֹ כְּלִי וְאָמַר לוֹ תֵּן לִי בָּזֶה אֹכֶל וּזְכֵה לִי בּוֹ הֲרֵי זֶה לוֹקֵחַ אֹכֶל וּמְעָרֵב עָלָיו בּוֹ:

A person may give a coin to a homeowner in order that he should purchase bread and makr a perimeter eruv for him with it. But if he gave [it] to a storekeeper or a baker and said to him, "Acquire [it] for me with this coin," it is not an eruv. However if he said to him, "Make an eruv for me with this coin," that one will surely purchase bread or food with it and make an eruv for him. And if he gave him a vessel and said to him, "Give me food for this and acquire [it] for me with it," that one will surely purchase food and make an eruv for him with it.

Halacha 21כ״א

מְעָרֵב אָדָם עֵרוּבֵי תְּחוּמִין עַל יְדֵי בְּנוֹ וּבִתּוֹ הַקְּטַנִּים וְעַל יְדֵי עַבְדּוֹ וְשִׁפְחָתוֹ הַכְּנַעֲנִים בֵּין מִדַּעְתָּן בֵּין שֶׁלֹּא מִדַּעְתָּן. לְפִיכָךְ אִם עֵרֵב עֲלֵיהֶן וְעֵרְבוּ לְעַצְמָן יוֹצְאִין בְּשֶׁל רַבָּן. אֲבָל אֵינוֹ מְעָרֵב לֹא עַל יְדֵי בְּנוֹ וּבִתּוֹ הַגְּדוֹלִים וְלֹא עַל יְדֵי עַבְדּוֹ וְשִׁפְחָתוֹ הָעִבְרִים וְלֹא עַל יְדֵי אִשְׁתּוֹ אֶלָּא מִדַּעְתָּן. וְאַף עַל פִּי שֶׁהֵן אוֹכְלִין אֶצְלוֹ עַל שֻׁלְחָנוֹ. וְאִם עֵרֵב עֲלֵיהֶן וְשָׁמְעוּ וְשָׁתְקוּ וְלֹא מִחוּ יוֹצְאִין בְּעֵרוּבוֹ. עֵרֵב עַל אֶחָד מֵהֶן וְעֵרְבוּ הֵן לְעַצְמָן אֵין לְךָ מְחָאָה גְּדוֹלָה מִזּוֹ וְיוֹצְאִין בְּעֵרוּב עַצְמָן. קָטָן בֵּן שֵׁשׁ שָׁנִים אוֹ פָּחוֹת יוֹצֵא בְּעֵרוּב אִמּוֹ וְאֵין צָרִיךְ לְהַנִּיחַ עָלָיו מְזוֹן שְׁתֵּי סְעֻדּוֹת לְעַצְמוֹ:

A man may make a perimeter eruv on behalf of his minor son or daughter and on behalf of his Canaanite (gentile) slave or maidservant — whether with their knowledge or without their knowledge. Hence if he made an eruv for them and they made an eruv for themselves, they go out [based on] their master's [or father's one]. But he may not make an eruv on behalf of his adult son or daughter; nor on behalf of his Hebrew slave or maidservant, except with their knowledge — even though they eat with him upon his table. And if he did make an eruv for them, and they heard and were quiet and did not protest, they go out [based on] his eruv. [However, if] he made an eruv for one of them and they made an eruv for themselves, there is no greater protest than this — and they go out [based on] their own eruv. A child of six years or less may go out [based on] the eruv of his mother, and there is no need to place food for two meals for him [in the eruv].

Halacha 22כ״ב

הָרוֹצֶה לְשַׁלֵּחַ עֵרוּבוֹ בְּיַד אַחֵר לְהַנִּיחוֹ לוֹ בְּמָקוֹם שֶׁהוּא רוֹצֶה לִקְבֹּעַ שְׁבִיתָתוֹ שָׁם הָרְשׁוּת בְּיָדוֹ. וּכְשֶׁהוּא מְשַׁלְּחוֹ אֵינוֹ מְשַׁלְּחוֹ בְּיַד חֵרֵשׁ שׁוֹטֶה וְקָטָן וְלֹא בְּיַד מִי שֶׁאֵינוֹ מוֹדֶה בְּמִצְוַת עֵרוּב. וְאִם שָׁלַח אֵינוֹ עֵרוּב. וְאִם שְׁלָחוֹ בְּיַד אֶחָד מֵאֵלּוּ הַפְּסוּלִין לְהוֹלִיכוֹ לְאָדָם כָּשֵׁר כְּדֵי שֶׁיּוֹלִיכוֹ הַכָּשֵׁר וְיַנִּיחוֹ בִּמְקוֹם הָעֵרוּב הֲרֵי זֶה כָּשֵׁר. וַאֲפִלּוּ שְׁלָחוֹ עַל הַקּוֹף אוֹ עַל הַפִּיל. וְהוּא שֶׁיִּהְיֶה עוֹמֵד מֵרָחוֹק עַד שֶׁיִּרְאֶה זֶה הַפָּסוּל אוֹ הַבְּהֵמָה שֶׁהִגִּיעוּ אֵצֶל הַכָּשֵׁר שֶׁאָמַר לוֹ לְהוֹלִיךְ אֶת הָעֵרוּב. וְכֵן רַבִּים שֶׁנִּשְׁתַּתְּפוּ בְּעֵרוּבֵי תְּחוּמִין וְרָצוּ לִשְׁלֹחַ עֵרוּבָן בְּיַד אַחֵר הֲרֵי אֵלּוּ מְשַׁלְּחִין:

[If] one wants to send his eruv in the hand of another to place it in the place that he wants to establish his resting, he has permission [to do so]. But when he sends it, he may not send it in the hand of deaf-mute, a mentally incapacitated person or a minor, nor in the hand of one who does not concede about the commandment of eruv. And if he sends it [with one of these], it is not an eruv. But if he sends it with one of these disqualified people to bring it to a fit person so that the fit person bring it and place it in the place of the eruv, it is surely fit — [as it would be] even if he sent it [with] a monkey or an elephant. And that is so long as he stands from a distance until he sees that the disqualified person or animal reached the fit one to whom he told him to take the eruv. And likewise the many who want to participate in a perimeter eruv and wanted to send their eruv in the hand of someone else may surely send [it in the same way].

Halacha 23כ״ג

אֶחָד אוֹ רַבִּים שֶׁאָמְרוּ לְאֶחָד צֵא וַעֲרֵב עָלֵינוּ וְעֵרֵב עֲלֵיהֶן בְּאֵי זֶה רוּחַ שֶׁרָצָה הֲרֵי זֶה עֵרוּב וְיוֹצְאִין בּוֹ שֶׁהֲרֵי לֹא יִחֲדוּ לוֹ רוּחַ. הָאוֹמֵר לַחֲבֵרוֹ עָרֵב עָלַי בִּתְמָרִים וְעֵרֵב עָלָיו בִּגְרוֹגָרוֹת. בִּגְרוֹגָרוֹת וְעֵרֵב עָלָיו בִּתְמָרִים. אָמַר לוֹ הַנִּיחַ עֵרוּבִי בְּמִגְדָּל וְהִנִּיחוֹ בְּשׁוֹבָךְ. בְּשׁוֹבָךְ וְהִנִּיחוֹ בְּמִגְדָּל. בַּבַּיִת וְהִנִּיחוֹ בַּעֲלִיָּה בַּעֲלִיָּה וְהִנִּיחוֹ בַּבַּיִת אֵינוֹ עֵרוּב. אֲבָל אִם אָמַר לוֹ עָרֵב עָלַי סְתָם וְעֵרֵב עָלָיו בֵּין בִּגְרוֹגָרוֹת בֵּין בִּתְמָרִים בֵּין בַּבַּיִת בֵּין בַּעֲלִיָּה הֲרֵי זֶה עֵרוּב:

[If] one or many said to [another person], "Go out and make an eruv for us," and he made [it] for them in any direction that he wanted — it is certainly an eruv, and they go out [based on] it. For they surely did not specify a direction to him. One who says to his fellow, "Make an eruv for me with dates," but he made an eruv for him with dried fig cakes; "with dried fig cakes," but he made an eruv for him with dates; [if] he said to him, "Place my eruv in a closet," but he placed it in a dovecot; "in a dovecot," but he placed it in a closet; "in a house," but he placed it in an attic; "in an attic," but he placed it in a house — it is not an eruv. But if he said to him, "Make an eruv for me" without specifying, and he made an eruv for him — whether with dried fig cakes or with dates; whether in a house or in an attic — it is surely an eruv.

Halacha 24כ״ד

כְּשֵׁם שֶׁמְּבָרְכִין עַל עֵרוּבֵי חֲצֵרוֹת וְשִׁתּוּפֵי מְבוֹאוֹת כָּךְ מְבָרְכִין עַל עֵרוּבֵי תְּחוּמִין. וְאוֹמֵר בְּזֶה הָעֵרוּב יִהְיֶה מֻתָּר לִי לְהַלֵּךְ לְמָקוֹם זֶה אַלְפַּיִם אַמָּה לְכָל רוּחַ. וְאִם הָיָה אֶחָד מְעָרֵב עַל יְדֵי רַבִּים אוֹמֵר בְּזֶה הָעֵרוּב יִהְיֶה מֻתָּר לִפְלוֹנִי אוֹ לִבְנֵי מָקוֹם פְּלוֹנִי אוֹ לִבְנֵי עִיר זוֹ לְהַלֵּךְ מִמָּקוֹם זֶה אַלְפַּיִם אַמָּה לְכָל רוּחַ:

Just as a blessing should be recited when either a courtyard eruv or an alley eruv is prepared, so should a blessing be recited over an eruv prepared between Sabbath limits. One should also add: "By virtue of this eruv, I shall be permitted to walk two thousand cubits in any direction from this place." And if one was making an eruv on behalf of the many, he says, "With this eruv, it shall be permissible for x" or "for the residents of place x" or "for the residents of this city to walk two thousand ells in every direction from this place."