Exodus 29:10

29:10 “You are to present the bull at the front of the tent of meeting, and Aaron and his sons are to put their hands on the head of the bull.

Leviticus 1:4

1:4 He must lay his hand on the head of the burnt offering, and it will be accepted for him to make atonement on his behalf.

Leviticus 8:14

Consecration Offerings

8:14 Then he brought near the sin offering bull and Aaron and his sons laid their hands on the head of the sin offering bull,

Leviticus 16:21

16:21 Aaron is to lay his two hands on the head of the live goat and confess over it all the iniquities of the Israelites and all their transgressions in regard to all their sins, and thus he is to put them on the head of the goat and send it away into the wilderness by the hand of a man standing ready.