Exodus 29:31-37

31“Take the ram for the ordination and cook the meat in a sacred place. 32At the entrance to the tent of meeting, Aaron and his sons are to eat the meat of the ram and the bread that is in the basket. 33They are to eat these offerings by which atonement was made for their ordination and consecration. But no one else may eat them, because they are sacred.

34And if any of the meat of the ordination ram or any bread is left over till morning, burn it up. It must not be eaten, because it is sacred. 35“Do for Aaron and his sons everything I have commanded you, taking seven days to ordain them. 36Sacrifice a bull each day as a sin offering to make atonement. Purify the altar by making atonement for it, and anoint it to consecrate it.

37For seven days make atonement for the altar and consecrate it. Then the altar will be most holy, and whatever touches it will be holy.