Numbers 19:5-7

New Century Version

⁵ The whole cow must be burned while he watches; the skin, the meat, the blood, and the intestines must all be burned. ⁶ Then the priest must take a cedar stick, a hyssop branch, and a red string and throw them onto the burning cow. ⁷ After the priest has washed himself and his clothes with water, he may come back into the camp, but he will be unclean until evening.