Leviticus 1:2-4

2“Speak to the children of Israel and say to them, ‘When any one of you brings an offering to the Lord, you shall bring your offering of [domestic] animals from the herd (cattle, oxen) or from the flock (sheep, goats).

3If his offering is a burnt offering from the herd, he shall offer a male without blemish; he shall offer it at the doorway of the Tent of Meeting so that he may be accepted before the Lord.

4He shall lay his hand on the head of the burnt offering [transferring symbolically his guilt to the sacrifice], that it may be accepted for him to make atonement on his behalf.