אורח חיים שפ״אOrach Chayim 381

Se’if 1א׳

הַמְבַטֵּל רְשׁוּתוֹ, וְהוֹצִיא אַחַר כָּךְ מִבֵּיתוֹ לֶחָצֵר בְּשׁוֹגֵג, אֵינוֹ אוֹסֵר; בְּמֵזִיד אוֹסֵר, שֶׁהֲרֵי חוֹזֵר מִבִּטּוּלוֹ שֶׁבִּטֵּל. וְאִם הֶחֱזִיקוּ בּוֹ כְּבָר, שֶׁהוֹצִיאוּ מִבָּתֵּיהֶם לֶחָצֵר אוֹ שֶׁהִכְנִיסוּ מֵחָצֵר לְבָתֵּיהֶם, אֵינוֹ יָכוֹל לַחֲזֹר מִבִּטּוּלוֹ. וּלְרַשִׁ"י אֵין חֲזָקָה מוֹעֶלֶת אֶלָּא אִם כֵּן הֶחֱזִיקוּ מִשֶּׁחָשְׁכָה.

Laws of one who renounced his domain and then carried anyway. Containing 7 paragraphs: One who renounced his domain and afterward carried from his house to the courtyard inadvertently does not restrict. If he did so deliberately he restricts, since he thereby retracts his renunciation. But if they had already taken possession meaning they carried from their houses to the courtyard or brought in from the courtyard to their houses he can no longer retract his renunciation. According to Rashi, taking possession is only effective if it occurred after nightfall.

Se’if 2ב׳

יֵשׁ בִּטּוּל רְשׁוּת מֵחָצֵר לְחָצֵר, לֹא שְׁנָא שְׁתֵּי חֲצֵרוֹת, וּפֶתַח בֵּינֵיהֶן, וְעֵרְבָה כָּל אַחַת לְעַצְמָהּ, וְלֹא עֵרְבוּ יַחַד, יְכוֹלָה כָּל אַחַת לְבַטֵּל רְשׁוּתָהּ לַחֲבֶרְתָּהּ לִהְיוֹתָהּ מֻתֶּרֶת לְהִשְׁתַּמֵּשׁ בָּהּ, וְלֹא הִיא, לֹא שְׁנָא שְׁתֵּי חֲצֵרוֹת זוֹ לִפְנִים מִזּוֹ וְלֹא עֵרְבוּ אֶלָּא הַחִיצוֹנָה לְבַדָּהּ שֶׁפְּנִימִית אוֹסֶרֶת עַל הַחִיצוֹנָה, יְכוֹלָה לְבַטֵּל לָהּ רְשׁוּתָהּ שֶׁלֹּא תִּשְׁתַּמֵּשׁ וְלֹא תַּעֲבֹר עָלֶיהָ אֶלָּא בְּשָׁעָה שֶׁצְּרִיכָה לָצֵאת וְתִהְיֶה הַחִיצוֹנָה מֻתֶּרֶת, אוֹ אִם עֵרְבוּ יַחַד וְנָתְנוּ עֵרוּבָן בַּחִיצוֹנָה, וְשָׁכַח אֶחָד מֵהַפְּנִימִית וְלֹא עֵרֵב, יָכוֹל לְבַטֵּל רְשׁוּתוֹ, דְּהַיְנוּ שֶׁיְּבַטֵּל רְשׁוּתוֹ לְכָל אֶחָד מִבְּנֵי הַפְּנִימִית וְגַם לְכָל אֶחָד מִבְּנֵי הַחִיצוֹנָה, וְיִהְיֶה הוּא לְבַדּוֹ אָסוּר וְכֻלָּם מֻתָּרִים.

Renunciation of domain applies from courtyard to courtyard as well. Whether two courtyards with an opening between them where each made its own eruv and they did not make a joint eruv — each one may renounce its domain to the other, making it permitted to use it, but not the reverse. Or whether two courtyards one inside the other where only the outer one made an eruv and the inner one restricts the outer — the inner one may renounce its domain to the outer so that it neither uses nor passes through it except when it needs to exit, and the outer one will be permitted. Or if they made a joint eruv and placed it in the outer one and one person from the inner one forgot and did not make an eruv — he may renounce his domain, meaning he renounces to each member of the inner courtyard and to each member of the outer courtyard, leaving only himself forbidden while all the others are permitted.

Se’if 3ג׳

יֵשׁ בִּטּוּל רְשׁוּת בְּחֻרְבָה, שֶׁאִם הָיוּ שְׁנֵי בָּתִּים וְחֻרְבָה בֵּינֵיהֶם שֶׁהִיא שֶׁל שְׁנֵיהֶם וְשָׁכְחוּ וְלֹא עֵרְבוּ, יָכוֹל אֶחָד לְבַטֵּל רְשׁוּתוֹ לַחֲבֵרוֹ וְלִהְיוֹתוֹ מֻתָּר בּוֹ.

Renunciation of domain applies in a ruin as well — if there were two houses with a ruin between them belonging to both, and they forgot and did not make an eruv, one may renounce his domain to the other and the other will be permitted in it.