Halakhah do Kapłańska 2:12

And these are all the types of meal-offerings that they would offer at the time of the [Temple] that come on their own - meaning to say that they do not come as meal-offerings of libations, meaning in the context of another sacrifice: There are three meal-offerings that come for the sake of the entire community and they are (Menachot 68b) the omer of Pesach, the two breads of [Shavouot] and the bread of display of each Shabbat - and the three of them are called, 'mincha.' And there are nine of the individual and these are them: 1) The meal-offering of a sinner - and that is the meal-offering that a poor person offers when he is liable for a sin-offering, but his hand does not reach [a more expensive sacrifice]; 2) the meal-offering of the sotah, which is the meal-offering of jealousy that is written in Parshat Nasso (Numbers 5:15); 3) the meal-offering that every priest offers when he enters the service that he offers in his hand, and this is called the meal-offering of inauguration; 4) the meal-offering that the high priest offers every day, and it is called the griddled meal-offering; 5) the meal-offering of fine flour, and it comes as an oath or a vow; 6) the meal-offering of the griddle, and it comes as an oath or a vow; 7) the meal-offering of the pan, and it comes as an oath or a vow; 8) the oven-baked meal-offering that is loaves, and it comes as an oath or a vow; 9) the oven-baked meal-offering that comes soaked in oil, and it comes as an oath or a vow. From these meal-offerings, some of them are fine wheat flour and some are barley; some of them are eaten by the priests except for the handful and some are all burnt. And one of them is chamets and that is the two breads of the day of Shavouot, as they are also called 'mincha,' but they are not offered on top of the altar. And it was not stated in the Torah about the two breads, when it more generally forbade, "Any meal-offering that you offer to the Lord, you shall not make chamets" (Leviticus 2:11). [Rather,] it specified these and excluded them from the rule. And about them is it stated there (Leviticus 2:12), "A first sacrifice shall you bring them to the Lord" - meaning to say, with these I did not prohibit chamets to you. And nonetheless, they would not go up on the altar, since there was chamets in them, and as it is stated about them, "upon the altar they shall not be brought up as a pleasing smell." And all of the rest was matsa. And the order of their bringing was thus (Sotah 14b): A man brings fine flour from his house in a vessel of silver or gold or of [another] metal and carries it to the priest; and the priest carries it to the altar, [he] skims a handful from it with the tips of his fingers and incinerates the handful; and the rest is eaten by the priests. This is the order of those eaten. And the order of those burned; the processes done with meal-offerings by non-priests and those done [only] by priests; and the rest of its details are elucidated in the tractate that is built upon this, and that it Tractate Menachot.

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.