Exodus 29:27-34

27Consecrate for Aaron and his sons the breast of the wave offering that is waved and the thigh of the heave offering that is lifted up from the ram of ordination. 28This will belong to Aaron and his sons as a regular portion from the Israelites, for it is the heave offering the Israelites will make to the LORD from their peace offerings.

29The holy garments that belong to Aaron will belong to his sons after him, so they can be anointed and ordained in them. 30The son who succeeds him as priest and enters the Tent of Meeting to minister in the Holy Place must wear them for seven days.

31You are to take the ram of ordination and boil its flesh in a holy 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 must eat those things by which atonement was made for their ordination and consecration. But no outsider may eat them, because these things are sacred. 34And if any of the meat of ordination or any bread is left until the morning, you are to burn up the remainder. It must not be eaten, because it is sacred.