Leviticus 6:9-11

9Then what is left from it Aaron and his sons are to eat. It is to be eaten as matzah in a holy place, in the courtyard of the Tent of Meeting.

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.”