Exodus 29:33-35

Revised Standard Version

³³ They shall eat those things with which atonement was made, to ordain and consecrate them, but an outsider shall not eat of them, because they are holy. ³⁴ And if any of the flesh for the ordination, or of the bread, remain until the 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; through seven days shall you ordain them,