וַיְדַבֵּ֥ר יְהוָ֖ה אֶל־מֹשֶׁ֥ה לֵּאמֹֽר׃
И сказал Господь Моисею, говоря:
Mishneh Torah, Negative Mitzvot
Not to allow the remainder of the meal-offerings (eaten by the priests) to become leavened, as it is said, “It shall not be baked with leaven; (I have given it as) their portion” (Lev. 6:10).