Leviticus 4:10-12

¹⁰as it is taken off from the ox of the sacrifice of peace-offering; and the priest shall burn them on the altar of burnt-offering.

¹¹And the skin of the bullock, and all its flesh, with its head, and with its legs, and its inwards, and its dung,

¹²even the whole bullock shall he carry forth outside the camp unto a clean place, where the ashes are poured out, and burn it on wood with fire; where the ashes are poured out shall it be burnt.