Exodus 29:32-34

Then Aaron and his sons shall eat the flesh of the ram, and the bread that is in the basket, by the door of the tabernacle of meeting. They shall eat those things with which the atonement was made, to consecrate and to sanctify them; but an outsider shall not eat them, because they are holy. And if any of the flesh of the consecration offerings, or of the bread, remains until the morning, then you shall burn the remainder with fire. It shall not be eaten, because it is holy.