Leviticus 6:10-13

10It must not be baked with hametz. I have given it as their portion of My offerings made by fire. It is most holy, like the sin offering and like the trespass offering.

11Every male among the children of Aaron may eat it, as their portion forever throughout your generations from the offerings of Adonai made by fire. Whoever touches them will become holy.”

12Adonai spoke to Moses, saying:

13“This is the offering of Aaron and his sons, which they are to offer to Adonai on the day when he is anointed: the tenth part of an ephah of fine flour for a continual grain offering, half of it in the morning, and half of it in the evening.