Deuteronomy 21:6

3 and it shall be that the city that is nearest unto the slain, the elders of that city shall take a heifer of the herd which hath not been wrought with, which hath not drawn in a yoke;

4 and the elders of that city shall take down the heifer into a ravine with an everflowing stream, which is neither tilled nor sown,—and shall behead there the heifer in the ravine.

5 Then shall the priests the sons of Levi come near, for of them, hath Yahweh thy God made choice to wait upon him, and to bless in the name of Yahweh,—and at their bidding, shall be settled every controversy and every punishment;

6 and, all the elders of that city who are nearest unto the slain, shall bathe their hands over the heifer that hath been beheaded in the ravine,

7 and shall respond, and say,—Our hands, shed not this blood, neither did, our eyes, see [the deed].

8 Be propitious unto thy people Israel whom thou hast redeemed, O Yahweh, and do not impute innocent blood in the midst of thy people Israel. So shall they obtain propitiation for the guilt of shedding blood.

9 Thou, therefore shalt consume the guilt of shedding innocent blood out of thy midst,—when thou shalt do that which is right in the eyes of Yahweh.