Leviticus 1:10-12

10 And if his offering is of the flock, a burned offering of sheep or goats, let him give a male without a mark.

11 And he is to put it to death on the north side of the altar before the Lord: and Aaron's sons, the priests, are to put some of the blood on and round the altar.

12 And the offering is to be cut into its parts, with its head and its fat; and the priest is to put them in order on the wood which is on the fire on the altar: