Avodah Zarah 29b-31b
עבודה זרה כ״ט ב-ל״א ב
Avodah Zarah 29b-31b
Rava rules that diluted wine is subject to both the halakha of exposure and the prohibition of yayin nesech, while cooked wine is exempt from both.
אָמַר רַב אָשֵׁי, וְאִיתֵּימָא רַב מְשַׁרְשְׁיָא: פֵּירוּקָא לְסַכַּנְתָּא? אָמַר רָבָא: הִלְכְתָא — יַיִן מָזוּג יֵשׁ בּוֹ מִשּׁוּם גִּילּוּי, וְיֵשׁ בּוֹ מִשּׁוּם יֵין נֶסֶךְ; יַיִן מְבוּשָּׁל אֵין בּוֹ מִשּׁוּם גִּילּוּי, וְאֵין בּוֹ מִשּׁוּם יֵין נֶסֶךְ.
Rav Ashi says, and some say that it was Rav Mesharshiyya who says: Are you providing a resolution for a situation involving danger? In other words, one may not endanger lives by subscribing to such reasoning. Rava said: The halakha is that diluted wine is subject to the halakha of exposure and is also subject to the prohibition of wine used as a libation for idolatry; cooked wine is not subject to the halakha of exposure and is not subject to the prohibition of wine used for a libation either.