Leviticus 3:1-3

“If you present an animal from the herd as a peace offering to the LORD, it may be a male or a female, but it must have no defects. Lay your hand on the animal’s head, and slaughter it at the entrance of the Tabernacle. Then Aaron’s sons, the priests, will splatter its blood against all sides of the altar. The priest must present part of this peace offering as a special gift to the LORD. This includes all the fat around the internal organs