Leviticus 9:12-14 - The Burnt Offering For The Priests
12 He then slaughtered the burnt offering, and his sons handed the blood to him and he splashed it against the altar's sides. 13 The burnt offering itself they handed to him by its parts, including the head, and he offered them up in smoke on the altar, 14 and he washed the entrails and the legs and offered them up in smoke on top of the burnt offering on the altar.