Numbers 19:4

2“This is the statute of the law which the LORD has commanded. Tell the children of Israel to bring you a red heifer without spot, in which is no defect, and which was never yoked.

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.