Leviticus 8:12-14

12And he poured of the anointing oil on Aaron's head, and anointed him, to hallow him.

13And Moses brought Aaron's sons near and clothed them with the vests, and girded them with the girdles, and bound the high caps on them, as Jehovah had commanded Moses.

14And he brought near the bullock for the sin-offering; and Aaron and his sons laid their hands on the head of the bullock for the sin-offering;