Question (Rashba): Our Mishnah discusses [when the wine was put] in the buyer's bottles. [The seller] should say to him "your bottles caused [it to sour]!", and according to R. Chiya bar Yosef, he should say to him "your Mazel caused it!"

Answer: Surely, if it was found to be vinegar, he can say so to him. However, here we do not discuss this. Rather, it teaches that he must give to him wine proper to last until Shavu'os.

Explanation #1 (Rashbam): The grocer is just a mere Shali'ach.

Objection #1 (Ri): If so, it should not have said "he sold"!

Objection #2: If so, we do not learn any Chidush from Rava, for this that it says "this is only...", it seems that Rava did not say so. Rather, the Gemara said it!

Explanation #2 (Ri): He sold an absolute sale [to the grocer], and he bought with intent to sell it in the store. He is like one who said "for porridge." It must last the time [to consume it through using a little at a time] for porridge;

Also here, it must last until he sells it bit by bit!

Question: According to the version below that says in the episode of one who accepted wine from his friend with intent to take it to the port of Val Shafat, if it turned to vinegar, no (the owner does not suffer the entire loss himself), like Rav Chiya bar Yosef;

Now, there that he did not totally sell it, he can tell [the Shali'ach] "[also] your Mazel caused [it to sour]." All the more so here he can say so, for he totally sold [to the grocer]!

Answer: That version establishes this teaching of Rava when we know that his wine sours. Even so, only if [he bought it] in order to sell it slowly. If not, [the seller] can tell him "you should not have delayed it."

Assertion: It seems that just like regarding stipulations of a building, it is considered a house only if it is [at least] six by eight [Amos], also regarding division of brothers or partners.

Implied question: A Mishnah says that we divide a Chatzer only if there are four Amos for this one [and for this one...]

If there are four Amos for this one and for this one, we divide!

Answer: That is only for a Chatzer, but not for a house.

Implied question: A Beraisa says that if a house does not have four Amos by four Amos, brothers and partners do not divide it. This implies that if it has four Amos by four Amos, they divide it!

Answer: In Sukah (3b) we establish this to discuss a Chatzer divided according to its openings (of the house that open to it).

Reference: In Rashi's Perush on Tanach (Melachim 1:6:20), he explained that the ceiling of the Aliyah over the Heichal was 10 Amos higher than that above Kodshei ha'Kodoshim.

Rejection: He did not look at the Gemara here.