א סְתָם יֵינָם שֶׁל עֲמָמִים עוֹבְדֵי כּוֹכָבִים אָסוּר בַּהֲנָאָה. וְהוּא הַדִּין לְמַגָּעָם בְּיַיִן שֶׁלָּנוּ. הַגָּה: מִשּׁוּם גְּזֵרַת יַיִן שֶׁנִּתְנַסֵּךְ לָאֱלִילִים. וּבַזְּמַן הַזֶּה, שֶׁאֵינוֹ שָׁכִיחַ שֶׁהָאֻמּוֹת מְנַסְּכִים לַעֲבוֹדַת כּוֹכָבִים, יֵשׁ אוֹמְרִים דְּמַגַּע עוֹבְדֵי כּוֹכָבִים בַּיַּיִן שֶׁלָּנוּ אֵינוֹ אוֹסֵר בַּהֲנָאָה, רַק בַּשְּׁתִיָּה; וְכֵן סְתָם יַיִן שֶׁלָּהֶם, אֵינוֹ אָסוּר לֵהָנוֹת מִמֶּנּוּ. וְלָכֵן מֻתָּר לִגְבּוֹת בְּחוֹבוֹ מִן הָעוֹבְדֵי כּוֹכָבִים סְתָם יֵינָם, מִפְּנֵי דְּהָוֵי כְּמַצִּיל מִיָּדָם (טוּר בְּשֵׁם רַשְׁבָּ"ם וְהָרֹא"שׁ וּמָרְדְּכַי). וְהוּא הַדִּין בִּשְׁאָר הֶפְסֵד, כְּגוֹן אִם עָבַר וְקָנָה אוֹ מָכַר, אֲבָל לְכַתְּחִלָּה אָסוּר לִקְנוֹתוֹ וּלְמָכְרוֹ כְּדֵי לְהִשְׂתַּכֵּר בּוֹ (הַגָּהוֹת מַיְמוֹנִי פ"ח דְּמַאֲכָלוֹת אֲסוּרוֹת וְהג"א וּמהר"מ פַּדוֹוָאה סי' מ"ו). וְיֵשׁ מְקִלִּין גַּם בָּזֶה, וְטוֹב לְהַחְמִיר. וְע"ל סִימָן קל"ב (שָׁם בְּשֵׁם סְמַ"ג וְאָגוּר בְּשֵׁם הַגְּאוֹנִים).
1 Several laws of 'Yayin Nesech' (and which wine is forbidden because of 'Yayin Nesech') and there are 26 paragraphs in it: The wine of the nations (non-Jews) is prohibited to derive pleasure from, and the same applies to their contact with our wine. Rema: this is because of a decree regarding wine that was poured as a libation to idols. Nowadays, when it is not common for nations to make libations to idols, some say that the touch of a non-Jew to our wine does not prohibit its use for pleasure, only for drinking. Similarly, ordinary - non-sacramental - wine of theirs is not prohibited for deriving pleasure from it, and therefore it is permissible to collect a debt from a non-Jew with ordinary wine, as it is considered as saving it from their hands (Tur in the name of Rashbam, the Rosh and Mordechai). And the same applies to other losses, such as if he went ahead and bought or sold, but initially it is forbidden to buy it and sell it in order to profit from it (Commentaries of Maimonides, Chapter 8 of Forbidden Foods, and comments of Ashiri and Mahar"m of Padua, Responsa 46). However, there are those who are lenient even in this, but it is good to be stringent. See Siman 132 (there in the name of Semag and Agur in the name of the Geonim).