Leviticus 6:4-5

⁴And he shall put off his robe, and put on another robe, and he shall take forth the offering that has been burned without the camp into a clean place.

⁵And the fire on the altar shall be kept burning on it, and shall not be extinguished; and the priest shall burn on it wood every morning, and shall heap on it the whole burnt offering, and shall lay on it the fat of the peace offering.