Leviticus 8:18

And he brought the ram for the burnt offering,.... One of the two he was ordered to take, Leviticus 8:2

and Aaron and his sons laid their hands on the head of the ram; as they had done before on the head of the bullock, see Leviticus 8:14 their right hands, as the Targum of Jonathan, and that at the same time; not first Aaron and then his sons, as a famous grammarian, Aben Ezra makes mention of, thought; but, as he himself says, they laid them on together.