Menachot 22 - February 2, 15 Shvat

Rav Mordechai reinstates the original interpretation of Shmuel’s limitation on the Mishna in Shekalim 7:7 - namely, that the court permitted the kohanim to use Temple salt for salting their sacrifices (for burning on the altar) but not for salting the meat of the sacrifices for consumption. This ruling of the court follows Ben Buchri’s opinion that kohanim are not obligated to pay the half-shekel (machatzit hashekel) used to fund communal items in the Temple. Since they did not contribute to the fund, one might have assumed they were ineligible to benefit from Temple salt; therefore, the court issued a specific stipulation to permit it.

The Mishna in Shekalim also mentions that the kohanim could use wood from the Temple for their private sacrifices. The source for this is derived from Vayikra 1:8, which mentions the wood "which is on the fire on the altar." The phrase "on the altar" is considered superfluous, indicating that the wood shares the same status as the altar itself; just as the altar is built from communal property, so too the wood must be communal. This teaching establishes that individuals are not required to bring wood from their own homes for their voluntary offerings. Rabbi Elazar ben Shamua defines the altar differently positing that the altar must be built using stones that have never been used. This requirement would also preclude individuals from bringing wood from their own homes. Consequently, the Gemara asks: what is the practical difference between these two opinions? The answer is that the latter opinion requires the wood to be brand new and never previously used, whereas the former does not.

If a kometz, which contains one log of oil, is mixed with the mincha of a kohen or a mincha of libations, which contains three log of oil, there is a debate between the rabbis and Rabbi Yehuda. They disagree on whether the mixture may be burned on the altar or if the blending disqualifies both offerings. The concern is that the oil from the mincha becomes added to the kometz, potentially disqualifying both; the kometz would then contain an excessive amount of oil, while the mincha would be left with an insufficient amount.

The Gemara cites a Mishna in Zevachim 77b featuring a debate between the rabbis and Rabbi Yehuda regarding whether two similar substances (min be'mino) can nullify one another. Rabbi Yochanan explains that both parties derive their respective positions from the Yom Kippur service, during which the blood of the bull and the blood of the goat are mixed together. Despite the volume of the bull's blood being significantly greater than that of the goat, the Torah continues to refer to the mixture as both "the blood of the bull" and "the blood of the goat"—indicating that the goat's blood remains distinct and is not nullified. The rabbis derive a broad principle from this: items designated for the altar never nullify one another, regardless of their type. Conversely, Rabbi Yehuda derives a different principle: blood does not nullify blood because they are the same type of substance (min be'mino). The Gemara raises challenges against both derivations, and they are left unresolved.

Rabbi Yehuda’s opinion in our Mishna appears to contradict his ruling in the Mishna in Zevachim; if two similar substances (min be'mino) do not nullify each other, then the oil of the mincha should not be nullified by (or absorbed into) the kometz. Rava resolves this contradiction by explaining that this case is an exception, as it is considered a situation where one substance "adds to" the other rather than merely mixing with it.