Deuteronomy 21:6-8

JPS_ASV_Byz(i) 6 And all the elders of that city, who are nearest unto the slain man, shall wash their hands over the heifer whose neck was broken in the valley. 7 And they shall speak and say: 'Our hands have not shed this blood, neither have our eyes seen it. 8 Forgive, O LORD, Thy people Israel, whom Thou hast redeemed, and suffer not innocent blood to remain in the midst of Thy people Israel.' And the blood shall be forgiven them.