Avodah Zarah 4:10 - 4:11

In the case of a gentile who was found standing next to the wine collection vat, if there is a loan owed by the owner of the wine vat to the gentile, the wine is prohibited. Since the gentile maintains that he has a right to the owner’s property he has no compunctions about touching the wine. But if there is no loan owed by the owner of the wine vat to the gentile, the wine is permitted, as it is assumed that the gentile did not touch the wine that was not his. If a gentile fell into the wine collection vat and emerged from it, or if he measured the wine in the winepress with a pole without touching it with his hands, or if he cast a hornet out of the wine by means of a pole and the pole touched the wine, or where the gentile was removing the foam that was on the top of a fermenting barrel of wine; with regard to all these cases there was such an incident. And the Sages said that the wine may be sold to gentiles, as it is permitted to derive benefit from the wine, but not to drink it. And Rabbi Shimon deems the wine permitted even for drinking. In a case where a gentile took the barrel of wine and threw it, in his anger, into the wine collection vat, this was an incident that occurred and the Sages deemed the wine fit for drinking.

גּוֹי שֶׁנִּמְצָא עוֹמֵד בְּצַד הַבּוֹר שֶׁל יַיִן, אִם יֶשׁ לוֹ עָלָיו מִלְוָה, אָסוּר. אֵין לוֹ עָלָיו מִלְוָה, מֻתָּר. נָפַל לַבּוֹר וְעָלָה, וּמְדָדוֹ בַקָּנֶה, הִתִּיז אֶת הַצִּרְעָה בַקָּנֶה אוֹ שֶׁהָיָה מְטַפֵּחַ עַל פִּי חָבִית מְרֻתַּחַת, בְּכָל אֵלּוּ הָיָה מַעֲשֶׂה, וְאָמְרוּ יִמָּכֵר. וְרַבִּי שִׁמְעוֹן מַתִּיר. נָטַל אֶת הֶחָבִית וּזְרָקָהּ בַּחֲמָתוֹ לַבּוֹר, זֶה הָיָה מַעֲשֶׂה וְהִכְשִׁירוּ:

In the case of a Jew who renders the wine of a gentile permitted by treading the gentile’s grapes so that the wine can be sold to Jews, and although a Jew has not yet paid for the wine he then places the wine in the gentile’s domain in a house that is open to a public thoroughfare until he sells it, the halakha depends on the circumstances. If this occurs in a city in which there are both gentiles and Jews, the wine is permitted, as the gentile does not touch the wine lest the Jews see him doing so. If this occurs in a city in which all its inhabitants are gentiles, the wine is prohibited unless a Jew sits and safeguards the wine. But the watchman is not required to sit and guard the wine constantly; even if he frequently leaves the place and comes in again later, the wine is permitted. Rabbi Shimon ben Elazar says: The domain of gentiles is all one, as the Gemara will explain.

הַמְטַהֵר יֵינוֹ שֶׁל נָכְרִי וְנוֹתְנוֹ בִרְשׁוּתוֹ בְּבַיִת הַפָּתוּחַ לִרְשׁוּת הָרַבִּים, בְּעִיר שֶׁיֶּשׁ בָּהּ גּוֹיִם וְיִשְׂרְאֵלִים, מֻתָּר. בְּעִיר שֶׁכֻּלָּהּ גּוֹיִם, אָסוּר, עַד שֶׁיּוֹשִׁיב שׁוֹמֵר. וְאֵין הַשּׁוֹמֵר צָרִיךְ לִהְיוֹת יוֹשֵׁב וּמְשַׁמֵּר. אַף עַל פִּי שֶׁהוּא יוֹצֵא וְנִכְנָס, מֻתָּר. רַבִּי שִׁמְעוֹן בֶּן אֶלְעָזָר אוֹמֵר, כָּל רְשׁוּת גּוֹיִם אַחַת הִיא: