Exodus 29:29-33

29“The holy garments that belong to Aaron are to belong to his sons after him, so that they can be anointed and ordained in them.

30Any priest who is one of his sons and who succeeds him and enters the tent of meeting to minister in the sanctuary must wear them for seven days.

31“You are to take the ram of ordination and boil its flesh in a holy place.

32Aaron and his sons are to eat the meat of the ram and the bread that is in the basket at the entrance to the tent of meeting.

33They must eat those things by which atonement was made at the time of their ordination and consecration. An unauthorized person must not eat them, for these things are holy.