A recent mishnah taught that a priest who is preparing an offering of unleavened dough must take special care that the dough does not leaven. What counts as not taking special care? On today’s daf, Rabbi Ami describes a situation in which a priest places a leavening agent on top of the dough of the meal offering and then sits down for a break. If the dough subsequently leavens, the priest is liable, even if leavening the dough wasn’t his intention. Rabbi Ami notes further that:
One becomes liable in this situation just like one who performs a prohibited action on Shabbat.
This sounds like a serious charge. Performing forbidden work on Shabbat carries a heavy penalty. Is the same really true for accidentally leavening the dough of a mincha offering? The commentator Rashi, who has read ahead of us in the Talmud, suggests that Rabbi Ami is referring not to the seriousness of the transgression, but to the way it takes place. He is comparing the priest who accidentally leaves a leavening agent on the dough too long to a person who places meat on some coals during Shabbat and accidentally cooks them. Yes, both hardly seem like accidents. But let’s use our imaginations on this one and grant that these things might happen accidentally.
The Gemara is not convinced that the dough/meat comparison holds up:
But doesn’t Rabba bar bar Hana say that Rabbi Yohanan says: In the case of one who placed meat on top of coals on Shabbat, if he subsequently turned over the meat to its other side, so that both sides were roasted, he is liable for cooking on Shabbat. But if he did not turn over the meat, he is exempt.
In order for the meat to roast, it must cook on both sides. Therefore, in order for a person to become liable for cooking on Shabbat, the casual placement of the meat on the coals is not sufficient — that person must also flip the meat so that both sides come into contact with the coals. Based on this source, it appears that Rabbi Ami is incorrect when he compares his ruling about the dough to the case of the meat, because the dough need not be flipped for the priest to become liable for allowing it to rise.
The rabbis enjoy resuscitating a position that has been defeated, which is what Rava next comes to do for Rabbi Ami. Rava explains that when Rabbi Ami compared the case of the dough to the case of the roasted meat, he did not mean to suggest that the acts were parallel. Rather, he meant to say the one who causes the dough to leaven is liable just like a person who causes meat to roast by placing on the coals and flipping it. They both completed a prohibited process, even though the steps that they took to do so were not parallel. In doing so, Rava validates the comment that points out the cases are not exactly parallel while allowing Rabbi Ami’s comparison to stand.
On display in this sugya are three characteristic moves of rabbinic discourse. First, identifying analogous material from a discussion from another part of the Talmud. Second, a challenge that suggests that the two cases are not as similar as they appear. And finally, an attempt to recontextualize a statement to harmonize disparate sources.
Read all of Menachot 56 on Sefaria.
This piece originally appeared in a My Jewish Learning Daf Yomi email newsletter sent on March 8, 2026. If you are interested in receiving the newsletter, sign up here.
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