Leviticus 6:9-10

9Command Aaron and his sons, saying, This is the law of the burnt offering. The burnt offering shall be on the hearth on the altar all night until the morning, and the fire of the altar shall be kept burning on it. 10And athe priest shall put on his linen garment and put his linen undergarment on his body, and he shall take up the ashes to which the fire has reduced the burnt offering on the altar and put them bbeside the altar.
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