About this episode
Following Ulla's ruling that conveying the blood without moving one's feet is invalid, the Gemara explores whether such a situation can be rectified if the initial conveying was performed without foot movement. The first attempt to prove that it can be corrected is from the Mishna in Zevachim 32a, but this derivation is ultimately rejected. A definitive proof is then brought from a statement of Ulla in the name of Rabbi Yochanan, establishing that the flaw cannot be corrected. Rav Nachman raises two challenges to Ulla's position based on rulings in the Mishna (Zevachim 32a and 25a). The first challenge is addressed, though not convincingly, while the second remains unresolved. A new interpretation is proposed regarding the debate between Rabbi Shimon and the Rabbis in our Mishna concerning the act of conveying. According to this view, when Rabbi Shimon rules that improper intention during conveying does not disqualify the sacrifice, he refers specifically to conveying without foot movement. However, this interpretation is mocked by the Rabbis in Eretz Yisrael. Initially, the Gemara explains their ridicule by suggesting that if Rabbi Shimon is correct, there would be no case in the sprinkling of the blood of a bird sin offering where improper intent could disqualify the offering, despite the known principle that intent during sprinkling can indeed disqualify. This explanation is rejected, and a more compelling reason is offered: Rabbi Shimon's own words in the Mishna indicate that he was discussing conveying by foot. He explains that conveying may be unnecessary because the animal can be slaughtered adjacent to the altar. Only foot-based conveying is deemed unnecessary, since even when slaughtered nearby, the blood still needs to be transferred to the altar by passing by hand. The Gemara then discusses a case where a non-kohen conveys the blood to the altar, and a kohen returns it to its original location before conveying it properly. There is a dispute over whether this sequence validates the offering or disqualifies it. In a reverse scenario, where a kohen conveys the blood, and a non-kohen returns it and then conveys it again, there is disagreement about whether this case parallels the previous one. Rav Shimi bar Ashi links the two cases: the one who permits in the first case forbids in the second, and vice versa, depending on whether the initial or final action is considered decisive. Rava, however, does not connect the cases, asserting that both would disqualify the second scenario. Once the blood is distanced from the altar, it must be returned in a valid manner - specifically, by a kohen. Rav Yirmia quotes Rav Yirmia of Difti, who claims that the question of whether blood that was brought to the altar and then distanced must be returned is itself a dispute between Rabbi Eliezer and the Rabbis in our Mishna. This interpretation is based on Rava's reading of the Mishna. Abaye challenges this view with a braita and ultimately rejects it, leading Rava to concede to Abaye's position. The Mishna enumerates various cases in which the handling of blood by someone disqualified from performing Temple service invalidates the sacrifice. The first example is a non-kohen. What is the source for this? One possibility is a derivation from Vayikra 22:2–3, while another is a kal va'chomer from the case of a blemished kohen.