Exodus 29:29-33

29"The holy garments of Aaron shall be for his sons after him; they shall be anointed in them and ordained in them.

30The son who succeeds him as priest, who comes into the tent of meeting to minister in the Holy Place, shall wear them seven days.

31"You shall take the ram of ordination and boil its flesh in a holy place.

32And Aaron and his sons shall eat the flesh of the ram and the bread that is in the basket in the entrance of the tent of meeting.

33They shall eat those things with which atonement was made at their ordination and consecration, but an outsider shall not eat of them, because they are holy.