Deuteronomy 21:6-8

Then all the elders of the city nearest the murdered person should wash their hands over the young cow whose neck was broken in the valley. They should declare: “We did not kill this person, and we did not see it happen. LORD, remove this sin from your people Israel, whom you have saved. Don’t blame your people, the Israelites, for the murder of this innocent person.” And so the murder will be paid for.