Leviticus 6:10-11

MLV(i) 10 And the priest will put on his linen garment and he will put his linen breeches upon his flesh and he will take up the ashes of the fire which has consumed the burnt offering on the altar and he will put them beside the altar. 11 And he will put off his garments and put on other garments and carry forth the ashes outside the camp to a clean place.