Leviticus 8:14-17

14Then he brought the bull for the sin offering, and Aaron and his sons laid their hands on the head of the bull.

15Next Moses killed it and took the blood and with his finger put some of it around on the horns of the altar and purified it [from sin]. Then he poured out the rest of the blood at the base of the altar and consecrated it, to make atonement for it.

16He took all the fat that was on the entrails, and the lobe of the liver, and the two kidneys with their fat, and Moses offered them up in smoke on the altar.

17But the bull (the sin offering) and its hide, its meat, and its refuse he burned in the fire outside the camp, just as the Lord had commanded Moses.