Leviticus 8:18-21

Then he brought the ram as the burnt offering. And Aaron and his sons laid their hands on the head of the ram, and Moses killed it. Then he sprinkled the blood all around on the altar. And he cut the ram into pieces; and Moses burned the head, the pieces, and the fat. Then he washed the entrails and the legs in water. And Moses burned the whole ram on the altar. It was a burnt sacrifice for a sweet aroma, an offering made by fire to the LORD, as the LORD had commanded Moses.