Deuteronomy

³And the city which is nearest to the slain man, the elders of that city shall take a heifer which has never been worked, never pulled in the yoke, ⁴And the elders of that city shall bring the heifer down to a valley with running water which is neither plowed nor sown, and shall break the heifer's neck there in the valley. ⁵And the priests, the sons of Levi, shall come near, for the Lord your God has chosen them to minister to Him and to bless in the name [and presence] of the Lord, and by their word shall every controversy and every assault be settled. ⁶And all the elders of that city nearest to the slain man shall wash their hands over the heifer whose neck was broken in the valley, ⁷And they shall testify, Our hands have not shed this blood, neither have our eyes seen it. ⁸Forgive, O Lord, Your people Israel, whom You have redeemed, and do not allow the shedding of innocent blood to be charged to Your people Israel. And the guilt of blood shall be forgiven them. ⁹So shall you purge the guilt of innocent blood from among you, when you do what is right in the sight of the Lord.