Numbers 19:5

3You shall give her to Eleazar the priest, and he shall bring her outside of the camp, and one shall kill her before his face.

4Eleazar the priest shall take some of her blood with his finger, and sprinkle her blood toward the front of the Tent of Meeting seven times.

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.