Numbers 35:25-27

Living Bible

²⁵ If it is decided that it was accidental, then the people shall save the killer from the avenger; the killer shall be permitted to stay in the City of Refuge; and he must live there until the death of the High Priest.

²⁶ “If the slayer leaves the city, ²⁷ and the avenger finds him outside and kills him, it is not murder,