(Beraisa - R. Yehudah): Why did they say that a Ba'al ha'Bayis separates one part in 24, and a baker, one part in 48?

Answer #1 (R. Yehudah): A baker is stingy about [the need to give away part of] his dough, and a Ba'al ha'Bayis is generous with his dough.

Answer #2 (Chachamim): It is not due to this. Rather, "u'Nesatem Mimenu Es Terumas Hash-m l'Aharon ha'Kohen'' - do so they will give to the Kohen in his Kehunah (a proper gift);

Rather, it is because a baker's dough is big, and there is a proper gift to a Kohen (even if it is one part in 48), and a Ba'al ha'Bayis' dough is small, and there is not a proper gift to a Kohen (if it would be one part in 48).

Question (Mishnah): If one makes a dough for himself, or makes for his son's nuptial feast, [the Shi'ur is] one part in 24. (Surely the dough for his son's nuptial feast is big!)

Answer: We should not distinguish in the dough of a Ba'al ha'Bayis (it is always one part in 24, even when it is big).

Question (Mishnah): And similarly, also a woman who makes to sell in the market, [the Shi'ur is] one part in 48.

Answer: We should not distinguish in the dough that will be sold in the market.

Question: This is fine for Chachamim [who say that the Shi'urim are in order that the Kohen will get a proper gift]. According to R. Yehudah [who says that the Shi'urim are due to people's stinginess and generosity, how can we answer]?

Answer: When she makes for her house, she is generous. When she makes to sell in the market, she is stingy. (We explained this like GRA.)

(Rebbi): Our Mishnah [says that if it became Tamei b'Shogeg or b'Ones, one part in 48, and b'Mezid, one part in 24; it] discusses one who normally separates one part in 24. However, if she normally separates one part in 48, would it teach 'lest a sinner profit'?! (Even b'Mezid, there is no reason for her to separate more than one part in 48!)