Leviticus 3:1-2

1‘If a man’s offering is a sacrifice of peace offerings, if he offers an animal from the herd, whether male or female, he shall offer it without blemish before the Lord.

2He shall lay his hand on the head of his offering [transferring symbolically his guilt to the sacrifice] and kill it at the doorway of the Tent of Meeting; and Aaron’s sons the priests shall sprinkle the blood around on the altar.