Exodus 29:32-34

and Aaron hath eaten--his sons also--the flesh of the ram, and the bread which is in the basket, at the opening of the tent of meeting;

and they have eaten those things by which there is atonement to consecrate their hand, to sanctify them; and a stranger doth not eat--for they are holy;

and if there be left of the flesh of the consecration or of the bread till the morning, then thou hast burned that which is left with fire; it is not eaten, for it is holy.