Halakhah su Levitico 6:10

The laws of the commandment: That which they, may their memory be blessed, said (Menachot 52b) that all meal-offerings that are offered on top of the altar come [as] matsa, as we said. And so [too, that] the remainders of the meal-offerings that the priests eat are not eaten chamets - even though [the priests] are permitted to eat them with any food or with honey - as it is stated (Leviticus 6:10), "You shall not bake their portion chamets," and [included] in its understanding is [that] even their portion shall they not render chamets. And if he renders its remainders chamets, he is lashed. And we administer lashes for each and every doing within it. How is this? [If] he kneaded it chamets or set it up chamets or cut it up chamets or broke it up chamets or baked it chamets, he is lashed - as it is stated, "you shall not make chamets," "you shall not bake chamets," to make liable for a single action in making it chamets; [he is] liable for lashes. And we do not dampen wheat kernels of meal-offerings lest they become chamets (Rashi on Pesachim 36a). And nonetheless they, may their memory be blessed, said (Menachot 55a) that baked meal-offerings were kneaded in lukewarm water, and they would guard them that they not become chamets, as priests are alacritous. And leaven and honey are forbidden (forbid) with the smallest amount, as it is stated, "you shall not burn from it" - meaning to say, even the smallest amount. And he is not liable unless he burns them with the offering or for the sake of the offering (Mishneh Torah, Laws of Things Forbidden on the Altar 5:1). And it is one whether he burns them by themselves or their mixture - he is lashed (Menachot 58a). But if he burned them on their own for the sake of [fire]wood, he is exempted; as it is stated (Leviticus 2:12), "upon the altar they shall not be brought up as a pleasing smell" - for a pleasing smell you shall not bring up, but you may bring up for the sake of wood (Zevachim 76b). And the rest of its details are elucidated in Tractate Menachot.

To not make the remainders of the meal-offering chamets (leavened): To not cook the remainders of the meal-offerings [to make them] chamets - and that is the portion of the meal-offerings that is of the priests - as it is stated (Leviticus 6:10), "It shall not be baked chamets, their portion have I given it of my fire-offerings." And it is as if it said, "Their portion - which is the remainders of the meal-offering - you shall not bake chamets." And in the explanation, they, may their memory be blessed, said in the Mishnah (Menachot 55a), "And they are liable for its baking [to make it] chamets."

And that which they also said (Shabbat 111a) that one who castrates after [another] who castrates is liable, and like Rabbi Chiya bar Avin said that Rabbi Yochanan said, "Everyone concedes that one who leavens after [another] leavened is liable, as it is stated (Leviticus 6:10), 'It shall not be baked leavened,' and (Leviticus 2:11) 'it shall not be made leavened'; that one who castrates after [another] castrates is liable, as it is stated (Leviticus 22:24), 'And a crushed, and a pounded and a disconnected and a cut' - if one is liable for one cut, is one not all the more so [liable] for one disconnected? Rather, [this comes] to include that one who disconnects after one who cuts is liable." How is this? Behold, one came and cut the member, and another came and cut the testicles or disconnected them, the last one is also liable; and so [too,] if one came and crushed the member, and another came and disconnected it, they are all lashed - even though the last one does not castrate, as it is already castrated. And that which they, may their memory be blessed, said (Shabbat 111a) that if one neuters a female - whether a person or of the other species - he is exempt. And that which they said (Shabbat 110a) that [it] is forbidden to give a cup of roots to a man or to other creatures in order to sterilize them, but we do not administer lashes for this. And so [too,] one who places his fellow in water or in snow, until the power of his reproductive organs is neutralized, is not lashed until he castrates [him] manually. But it is fitting to strike [such a one with] lashes of rebellion. And a woman is permitted to drink a cup of roots that sterilize her, such that she not give birth; as women are not commanded about being fruitful and multiplying - as I wrote in the first commandment of the book. And the rest of its details are elucidated in [various] places in Tractate Shabbat and Yevamot (see Tur, Even HaEzer 5).