Leviticus 3:2, 8, 13

And he shall lay his hand on the head of his offering and kill it at the entrance of the tent of meeting, and Aaron’s sons the priests shall throw the blood against the sides of the altar.

lay his hand on the head of his offering, and kill it in front of the tent of meeting; and Aaron’s sons shall throw its blood against the sides of the altar.

and lay his hand on its head and kill it in front of the tent of meeting, and the sons of Aaron shall throw its blood against the sides of the altar.