Leviticus 1:11-13

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:

13 But the inside parts and the legs are to be washed with water; and the priest will make an offering of all of it, burning it on the altar: it is a burned offering, an offering made by fire, for a sweet smell to the Lord.