Exodus 29:10-14

10“Then you shall bring the bull before the Tent of Meeting, and Aaron and his sons shall lay their hands on the bull’s head.

11Then you shall kill the bull before the Lord by the doorway of the Tent of Meeting.

12And you shall take some of the blood of the bull and with your finger put it on the horns of the altar [of burnt offering], and you shall pour out the remainder of the blood at the base of the altar.

13You shall take all the fat that covers the intestines and the lobe of the liver, and the two kidneys and the fat that is on them, and offer them up in smoke on the altar.

14But the meat of the bull, its hide, and the contents of its intestines you shall burn in the fire outside the camp; it is a sin offering.