Exodus 29:33-35 New American Standard Bible (NASB)

33. Thus they shall eat those things by which atonement was made at their ordination and consecration; but a layman shall not eat them, because they are holy.

34. If any of the flesh of ordination or any of the bread remains until morning, then you shall burn the remainder with fire; it shall not be eaten, because it is holy.

35. "Thus you shall do to Aaron and to his sons, according to all that I have commanded you; you shall ordain them through seven days.

Exodus 29