הלכות עירובין ה׳Eruvin 5

Halacha 1א׳

אַנְּשֵׁי מָבוֹי שֶׁהָיָה בֵּינֵיהֶן שִׁתּוּף בְּמַאֲכָל אֶחָד לְעִנְיַן סְחוֹרָה כְּגוֹן שֶׁקָּנוּ יַיִן בְּשֻׁתָּפוּת אוֹ שֶׁמֶן אוֹ דְּבַשׁ וְכַיּוֹצֵא בָּהֶן אֵינָן צְרִיכִין שִׁתּוּף אַחֵר לְעִנְיַן שַׁבָּת אֶלָּא סוֹמְכִין עַל שִׁתּוּף שֶׁל סְחוֹרָה. וְהוּא שֶׁיִּהְיֶה הַמִּין שֶׁהֵן שֻׁתָּפִין בּוֹ מִין אֶחָד וּבִכְלִי אֶחָד. אֲבָל אִם הָיָה אֶחָד מֵהֶן שֻׁתָּף לָזֶה בְּיַיִן וּלְאַחֵר בְּשֶׁמֶן אוֹ שֶׁהָיָה הַכּל יַיִן וְהָיָה בִּשְׁנֵי כֵּלִים הֲרֵי אֵלּוּ צְרִיכִין שִׁתּוּף אַחֵר לְעִנְיַן שַׁבָּת:

The people of an alley that had a partnership in a certain food for trade purposes — such as if they acquired wine in a partnership, or oil, or honey or that which is similar to them — do not require another [eruv] for the purposes of Shabbat. Rather they may rely upon the merchandise of the partnership. And this is so long as the merchandise in which they are partners is of one type and in one vessel. But if this one was partnered with that one with wine, and with another one with oil — or all of it was wine but it was in two vessels — they surely require another [eruv] for the purposes of Shabbat.

Halacha 2ב׳

אֶחָד מִבְּנֵי הַמָּבוֹי שֶׁבִּקֵּשׁ מֵחֲבֵרוֹ יַיִן אוֹ שֶׁמֶן קֹדֶם הַשַּׁבָּת וְלֹא נָתַן לוֹ בָּטַל הַשִּׁתּוּף. שֶׁהֲרֵי גִּלָּה דַּעְתּוֹ שֶׁאֵינָן כֻּלָּן כְּשֻׁתָּפִין שֶׁאֵין מַקְפִּידִין זֶה עַל זֶה. אֶחָד מִבְּנֵי הַמָּבוֹי שֶׁרָגִיל לְהִשְׁתַּתֵּף עִם בְּנֵי הַמָּבוֹי וְלֹא נִשְׁתַּתֵּף. בְּנֵי מָבוֹי נִכְנָסִין לְבֵיתוֹ וְנוֹטְלִין מִמֶּנּוּ שִׁתּוּף בְּעַל כָּרְחוֹ. וְאֶחָד מִבְּנֵי הַמָּבוֹי שֶׁאֵינוֹ רוֹצֶה לְהִשְׁתַּתֵּף כְּלָל עִם בְּנֵי הַמָּבוֹי כּוֹפִין אוֹתוֹ לְהִשְׁתַּתֵּף עִמָּהֶן:

[If one of the] residents of the alley requested wine or oil from his fellow before Shabbat and he did not give it to him, he [thereby] nullified it (as an eruv). For he surely revealed his thought that they are not all like partners whom are not exacting with one another (and would fulfill each other's requests). [If] one of the residents of the alley who is accustomed to participate [in the eruv] did not participate, the residents of the alley may enter his house and take [his portion] from him against his will. And they may force one of the residents of the alley who does not want to participate with the residents of the alley at all to participate with them.

Halacha 3ג׳

אֶחָד מִבְּנֵי הַמָּבוֹי שֶׁהָיָה לוֹ אוֹצָר שֶׁל יַיִן אוֹ שֶׁמֶן וְכַיּוֹצֵא בָּהֶן הֲרֵי זֶה מְזַכֶּה מִמֶּנּוּ מְעַט לְכָל בְּנֵי הַמָּבוֹי לְהִשְׁתַּתֵּף בּוֹ וּמְעָרֵב בּוֹ עֲלֵיהֶם. וְאַף עַל פִּי שֶׁלֹּא הִפְרִישׁוֹ וְלֹא יִחֲדוֹ אֶלָּא הֲרֵי הוּא מְעֹרָב בָּאוֹצָר הֲרֵי זֶה שִׁתּוּף:

One of the residents of the alley who had a storehouse of wine or oil or that which is similar to them may surely acquire a little of it for all of the residents of the alley with which to participate, and make an eruv for them with it. And even though he did not separate it or designate it, but it is rather surely mixed up in the storehouse, it is surely an [eruv].