Leviticus 8:12-14

And he poured of the anointing oil upon Aaron's head, and anointed him, to sanctify him.

And Moses brought Aaron's sons, and put coats upon them, and girded them with girdles, and put bonnets upon them; as the LORD commanded Moses.

¶ And he brought the bullock for the sin offering: and Aaron and his sons laid their hands upon the head of the bullock for the sin offering.