Leviticus 3:1-3

‘Now if his offering is a sacrifice of peace offerings, if he is going to offer out of the herd, whether male or female, he shall offer it without defect before the LORD. He shall lay his hand on the head of his offering and slay it at the doorway of the tent of meeting, and Aaron’s sons the priests shall sprinkle the blood around on the altar. From the sacrifice of the peace offerings he shall present an offering by fire to the LORD, the fat that covers the entrails and all the fat that is on the entrails