Leviticus 1:12-13

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: 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.