Exodus 29:8

6You shall set the turban on his head, and put the holy crown on the turban.

7Then you shall take the anointing oil, and pour it on his head, and anoint him.

8You shall bring his sons, and put tunics on them.

9You shall clothe them with belts, Aaron and his sons, and bind headbands on them. They shall have the priesthood by a perpetual statute. You shall consecrate Aaron and his sons.

10“You shall bring the bull before the Tent of Meeting; and Aaron and his sons shall lay their hands on the head of the bull.