Leviticus 3:2

2 And he shall set his hand upon the head of his slain sacrifice, which shall be offered in the entering of the tabernacle; and the sons of Aaron, [the] priest(s), shall pour the blood by compass of the altar. (And he shall put his hand on the head of his sacrifice, and shall offer, or shall kill, it at the entrance to the Tabernacle; and the priests, the sons of Aaron, shall throw the blood against all the sides of the altar.)