Leviticus 9:10-12

New Century Version

¹⁰ Aaron took the fat, the kidneys, and the best part of the liver from the sin offering and burned them on the altar, in the way the Lord had commanded Moses. ¹¹ The meat and skin he burned outside the camp.

¹² Then Aaron killed the animal for the whole burnt offering. His sons brought the blood to him, and he sprinkled it on all sides of the altar.