Leviticus 6:16-18

16Aaron and his sons shall eat the rest of it, but it is to be eaten without yeast in the sanctuary area; they are to eat it in the courtyard of the tent of meeting. 17It must not be baked with yeast; I have given it as their share of the food offerings presented to me. Like the sin offering and the guilt offering, it is most holy. 18Any male descendant of Aaron may eat it. For all generations to come it is his perpetual share of the food offerings presented to the Lord. Whatever touches them will become holy.’ ”