Deuteronomy 19:10-13

10So innocent blood will not be shed in the midst of your land which the Lord your God is giving you as an inheritance, and 1guilt for bloodshed will not be on you.

11“But 2if there is a person who hates his neighbor, and waits in ambush for him and rises up against him and strikes 3him so that he dies, and he flees to one of these cities, 12then the elders of his city shall send men and take him from there, and hand him over to the avenger of blood, so that he may die. 1345You shall not pity him, but 6you shall eliminate the guilt for the bloodshed of the innocent from Israel, so that it may go well for you.