Exodus 29:34-36

Amplified Bible, Classic Edition

³⁴ And if any of the flesh or bread for the ordination remains until morning, you shall burn it with fire; it shall not be eaten, because it is holy (set apart to the worship of God).

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

³⁶ You shall offer every day a bull as a sin offering for atonement. And you shall cleanse the altar by making atonement for it, and anoint it to consecrate it.