Leviticus 1:3 'If his offering is a burnt offering from the herd, he shall offer it, a male without defect; he shall offer it at the doorway of the tent of meeting, that he may be accepted before the LORD.

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

Leviticus 8:18 Then he presented the ram of the burnt offering, and Aaron and his sons laid their hands on the head of the ram.

Numbers 8:10 and present the Levites before the LORD; and the sons of Israel shall lay their hands on the Levites.

Numbers 8:12 "Now the Levites shall lay their hands on the heads of the bulls; then offer the one for a sin offering and the other for a burnt offering to the LORD, to make atonement for the Levites. (NASB ©1995)