יורה דעה קכ״הYoreh De'ah 125

Se’if 1א׳

נָטַל עוֹבֵד כּוֹכָבִים כְּלִי שֶׁל יַיִן וְהִגְבִּיהוֹ וְיָצָק הַיַּיִן, אַף עַל פִּי שֶׁלֹּא שִׁכְשֵׁךְ, נֶאֱסַר בִּשְׁתִיָּה, שֶׁהֲרֵי הַיַּיִן בָּא מִכֹּחוֹ; וּמָה שֶׁנִּשְׁאַר בַּכְּלִי אָסוּר גַּם כֵּן, מִשּׁוּם נִצּוֹק. וְיֵשׁ אוֹמְרִים דְּלֹא אַסְרִינָן נִצּוֹק בְּכֹחַ עוֹבֵד כּוֹכָבִים (טוּר וְהָרֹא"שׁ וּמָרְדְּכַי וְרַ"ן בְּשֵׁם רַשִׁ"י וְתוֹסָפוֹת וְרַאֲבָ"ן וּתְשׁוּבַת מיי' המ"א סִימָן י"א) וּמִכָּל מָקוֹם יֵשׁ לְהַחְמִיר אִם לֹא בְּהֶפְסֵד מְרֻבֶּה כְּדִלְקַמָּן סִימָן קכ"ו, וְאִם הוּא שֶׁלֹּא בְּכַוָּנָה שֶׁלֹּא יָדַע שֶׁהוּא יַיִן אוֹ שֶׁלֹּא הִגְבִּיהַּ הַכְּלִי (בַּיִת יוֹסֵף סִימָן קכ"ד), הַכֹּל מֻתָּר אֲפִלּוּ בִּשְׁתִיָּה.

An idolater (oved kokhavim — the standing term for a gentile) took a vessel of wine and lifted it and poured out the wine — even though he did not stir it, it has become forbidden for drinking, for the wine came by his force; and what remained in the vessel is forbidden also, on account of nitzok (the unbroken stream of poured wine, which joins what is above to what is below). And there are those who say that we do not forbid on account of nitzok where it is by the force of an idolater (Tur, and the Rosh, and Mordechai, and the Ran in the name of Rashi, and the Tosafot, and Raavan, and a responsum of Teshuvot Maimoniot on the Laws of Forbidden Foods, siman 11); and in any case one is to be stringent if it is not in a case of great loss, as below in siman 126. And if it is without intent, in that he did not know that it was wine, or where he did not lift the vessel (Beit Yosef, siman 124), the whole is permitted even for drinking.

Se’if 2ב׳

כֹּחַ כֹּחוֹ כְּכֹחוֹ דָּמִי. וְאִם הוּא כֹּחַ כֹּחַ כֹּחוֹ, כְּגוֹן קוֹרַת הַגַּת שֶׁגִּלְגְּלָהּ עוֹבֵד כּוֹכָבִים, שֶׁיֵּשׁ שָׁם ג' כֹּחוֹת: הַדַּפִּין וְהַגַּלְגַּל וְהַקּוֹרָה, בְּדִיעֲבַד מֻתָּר אֲפִלּוּ בִּשְׁתִיָּה.

The force of his force is regarded as his force. And if it is the force of the force of his force — such as the beam of the winepress that an idolater turned, where there are three forces, the boards and the wheel and the beam — after the fact it is permitted even for drinking.

Se’if 3ג׳

אִם כֹּחַ יִשְׂרָאֵל וְכֹחַ עוֹבֵד כּוֹכָבִים מְעֹרָבִים יַחַד, כְּגוֹן שֶׁשְּׁנֵיהֶם עֵרוּ בְּיַחַד, מֻתָּר בְּדִיעֲבַד. וַאֲפִלּוּ אִם הָיָה הָעוֹבֵד כּוֹכָבִים יָכוֹל לְבַדּוֹ לְעָרוֹת בְּלֹא סִיּוּעַ יִשְׂרָאֵל. וְהוּא שֶׁיְּהֵא הַיִּשְׂרָאֵל הַמְסַיֵּעַ גָּדוֹל, אֲבָל אִם הָיָה נַעַר קָטָן, אָסוּר מִשּׁוּם דְּהָוֵי מְסַיֵּעַ שֶׁאֵין בּוֹ מַמָּשׁ.

If the force of an Israelite and the force of an idolater are mixed together, such as where the two of them poured together, it is permitted after the fact; and even if the idolater was able to pour by himself without the help of the Israelite. And that is where the Israelite who helps is grown; but if he was a small boy it is forbidden, because it is a help that has no substance in it.