Exodus 29:33-35

American Standard Version

³³ And they shall eat those things wherewith atonement was made, to consecrate and to sanctify them: but a stranger shall not eat thereof, because they are holy. ³⁴ And if aught of the flesh of the consecration, or of the bread, remain unto the morning, then thou shalt burn the remainder with fire: it shall not be eaten, because it is holy.

³⁵ And thus shalt thou do unto Aaron, and to his sons, according to all that I have commanded thee: seven days shalt thou consecrate them.