Numbers 35:24-25

24If that happens, the people must judge who is right. They must choose between the killer and the dead person's relative. They must use those rules to decide if the man is a murderer.

25If the man is a killer but not a murderer, the people must keep him safe from the dead person's relative. They must send him back to the safe city that he ran to. He will live there safely until the death of the leader of God's priests.