Leviticus 6:18

6:18 Every male among the sons of Aaron may eat it. It is a perpetual allotted portion throughout your generations from the gifts of the Lord. Anyone who touches these gifts must be holy.’”

Leviticus 6:22

6:22 The high priest who succeeds him from among his sons must do it. It is a perpetual statute; it must be offered up in smoke as a whole offering to the Lord.