Psalmów 106:28 Odniesienia Miszny: Mishnah Avodah Zarah & Pirkei Avot

The following things belonging to non-Jews are forbidden [for Jews to use] and the prohibition extends to any benefit that may be derived from them: wine, or a non-Jew’s vinegar that was formerly wine, Hadrianic earthenware, skins pierced at the animal’s heart. Rabban Shimon ben Gamaliel says: when its tear is round, [the skin] is forbidden, but if oblong it is permitted. Meat which is being brought into a place of idol worship is permitted, but that which is brought out is forbidden, because it is like a sacrifice to the dead, this is the opinion of Rabbi Akiba. With non-Jews going on a pilgrimage [to worship idols] it is forbidden to have any business transactions, but with those returning it is permitted.

Rabbi Shimon said: if three have eaten at one table and have not spoken there words of Torah, [it is] as if they had eaten sacrifices [offered] to the dead, as it is said, “for all tables are full of filthy vomit, when the All-Present is absent” (Isaiah 28:8). But, if three have eaten at one table, and have spoken there words of Torah, [it is] as if they had eaten at the table of the All-Present, blessed be He, as it is said, “And He said unto me, ‘this is the table before the Lord’” (Ezekiel 41:22).