Exodus 29:32-34

Young's Literal Translation

³² 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;

³³ 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;

³⁴ 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.