Exodus 29:15-18

15And thou shalt take one of the rams, and Aaron and his sons shall put their hands upon the head of the ram;

16and thou shalt slaughter the ram, and shalt take its blood, and sprinkle [it] on the altar round about.

17And thou shalt cut up the ram into its pieces, and wash its inwards, and its legs, and put [them] upon its pieces, and upon its head;

18and thou shalt burn the whole ram upon the altar: it is a burnt-offering to Jehovah — a sweet odour; it is an offering by fire to Jehovah.