Numbers 19:5-7

⁵One shall burn the heifer in his sight; her skin, and her meat, and her blood, with her dung, shall he burn.

⁶The priest shall take cedar wood, hyssop, and scarlet, and cast it into the middle of the burning of the heifer.

⁷Then the priest shall wash his clothes, and he shall bathe his flesh in water, and afterward he shall come into the camp, and the priest shall be unclean until the evening.