This vinegar made of Aramean beer is prohibited, as they mix in it yeast of wine used for a libation. Rav Ashi said: But vinegar from a storeroom is permitted, since if another substance is mixed with it, it would spoil over time.

§ The mishna teaches: And Hadrianic earthenware is prohibited. The Gemara asks: What is Hadrianic earthenware? Rav Yehuda says that Shmuel says: It is earthenware of Emperor Hadrian. When Rav Dimi came, he said: There was an expanse of virgin soil that no man had ever tilled before, and Hadrian tilled it and planted grapevines in it, which yielded wine of the highest quality. And they placed this wine in white jugs, and the jugs absorbed the wine. And they would break the jugs into shards and carry the shards with them, and anywhere that they stopped, they soaked these shards in water and drank the water. The Gemara notes that Rabbi Yehoshua ben Levi says: And our first-rate wine is like the wine produced by the third usage of their Hadrianic earthenware.

A dilemma was raised before the Sages: What is the halakha if one wishes to use such shards to support the legs of a bed with them? Is one who desires a prohibited item’s continued existence in order to use it for another matter, i.e., not for the prohibited purpose, permitted to use it or prohibited from doing so? In this case, no benefit whatsoever is derived from the wine absorbed within the shards, but the shards themselves are being used to support the bed.

The Gemara suggests: Come and hear a resolution to the dilemma, as Rabbi Elazar and Rabbi Yoḥanan engaged in a dispute in this case: One prohibited using the shards in such a fashion, and one permitted this practice. The Gemara adds: And the halakha is in accordance with the opinion of the Sage who prohibited it.

The Gemara raises an objection from a baraita to the Sage who deems it permitted: With regard to the jugs [dardurin] and flagons [rokva’ot] of gentiles that have a Jew’s wine contained in them, one is prohibited from drinking the wine, but one is permitted to derive benefit from it. The Gemara notes that Shimon ben Guda testified before the son of Rabban Gamliel with regard to Rabban Gamliel that he drank from it in Akko, but the Sages did not concede to the ramifications of his testimony.

Concerning wineskins that belong to gentiles, Rabban Shimon ben Gamliel says in the name of Rabbi Yehoshua ben Kefusai: It is prohibited to fashion from them items such as blankets to cover a donkey, as one derives benefit from them. The Gemara explains the objection: And here, in the case of wineskins used as donkey covers, he desires its continued existence for another matter, and yet the baraita teaches that it is prohibited to use it for this purpose.

The Gemara retorts: And according to your reasoning, it should be prohibited to sell jugs belonging to gentiles, and yet Jews sell them frequently; what is different about wineskins, from which one may not derive indirect benefit, and what is different about jugs, which may be sold for indirect benefit? The Gemara answers that Rava says: There is a rabbinic decree that one may not sell wineskins of gentiles lest his own wineskin break open, and to repair it he would take the gentile’s wineskin and sew it onto his wineskin. This would cause the wine absorbed in the gentile’s wineskin to mix with the wine of the Jew and render it forbidden.

The Gemara asks: And according to the one who says that someone who desires the continued existence of a prohibited item for another matter is prohibited from using the item in this way, what is different about jugs that purchasing them is permitted? The Gemara explains that this Sage could have said to you: There, with regard to the jugs, there is no substantive prohibited entity, whereas here, in the case of Hadrianic earthenware, there is a substantive prohibited entity, as the wine is recognizable in the earthenware.

§ It was stated that Shimon ben Guda provided testimony, but the Sages did not concede to its ramifications. And the Gemara raises a contradiction: With regard to wine that comes in the flagons of gentiles, one is prohibited from drinking the wine, but one is permitted to derive benefit from it. Shimon ben Guda testified before the son of Rabban Gamliel with regard to Rabban Gamliel that he drank from it in Akko, and they conceded to him. This directly contradicts the episode cited above.

The Gemara explains: What is the meaning of the sentence: But they did not concede to the ramifications of his testimony, which was stated there, in the first account? The meaning is that the rest of his entire company, i.e., the Sages, did not concede, but his son did concede to him. If you wish, say instead that Guda with the letter alef, as stated in the first episode, is discrete, and Guda with an ayin, in the second account, is discrete, i.e., the two incidents are not referring to the same individual.

§ The mishna further teaches: And hides with a tear opposite the heart are prohibited. The Sages taught: What is considered a hide with a tear opposite the heart? Any hide that is torn opposite the heart and incised in a shape similar to an aperture, and which has a trace of coagulated blood on it, is prohibited.