Exodus 29:15-18

“Next Aaron and his sons must lay their hands on the head of one of the rams. Then slaughter the ram, and splatter its blood against all sides of the altar. Cut the ram into pieces, and wash off the internal organs and the legs. Set them alongside the head and the other pieces of the body, then burn the entire animal on the altar. This is a burnt offering to the LORD; it is a pleasing aroma, a special gift presented to the LORD.