Leviticus 4:12
12 all the rest of the bull—he shall carry foutside the camp to a clean place, to the ash heap, and shall gburn it up on a fire of wood. On the ash heap it shall be burned up.
Hebrews 13:11
11 For lthe bodies of those animals whose blood is brought into the holy places by the high priest as a sacrifice for sin are burned moutside the camp.