Leviticus 6:9-13

⁹"Command Aaron and his sons, saying, This is the law of the burnt offering. The burnt offering shall be on the hearth upon the altar all night until the morning, and the fire of the altar shall be kept burning on it. ¹⁰And the priest shall put on his linen garment, and put his linen breeches upon his body, and he shall take up the ashes to which the fire has consumed the burnt offering on the altar, and put them beside the altar. ¹¹Then he shall put off his garments, and put on other garments, and carry forth the ashes outside the camp to a clean place. ¹²The fire on the altar shall be kept burning on it, it shall not go out; the priest shall burn wood on it every morning, and he shall lay the burnt offering in order upon it, and shall burn on it the fat of the peace offerings. ¹³Fire shall be kept burning upon the altar continually; it shall not go out.