Leviticus 4:7-12

The priest will then put some of the blood on the horns of the altar for fragrant incense that stands in the LORD’s presence inside the Tabernacle. He will pour out the rest of the bull’s blood at the base of the altar for burnt offerings at the entrance of the Tabernacle. Then the priest must remove all the fat of the bull to be offered as a sin offering. This includes all the fat around the internal organs, the two kidneys and the fat around them near the loins, and the long lobe of the liver. He must remove these along with the kidneys, just as he does with cattle offered as a peace offering, and burn them on the altar of burnt offerings. But he must take whatever is left of the bull—its hide, meat, head, legs, internal organs, and dung— and carry it away to a place outside the camp that is ceremonially clean, the place where the ashes are dumped. There, on the ash heap, he will burn it on a wood fire.