Numbers 19:1-6

Then the LORD spoke to Moses and Aaron, saying, “This is the statute of the law which the LORD has commanded: ‘Tell the Israelites to bring you an unblemished red heifer in which there is no defect and on which a yoke has never been placed. You shall give it to Eleazar the priest, and it shall be brought outside the camp and be slaughtered in his presence. Next Eleazar the priest shall take some of its blood with his finger and sprinkle some of it toward the front of the Tent of Meeting (tabernacle) seven times. Then the heifer shall be burned in his sight; its skin, its flesh, its blood, and its waste, shall be burned (reduced to ash). The priest shall take cedar wood and hyssop and scarlet [material] and cast them into the midst of the burning heifer.