and he has been struck by him who is avenging blood, he who killed him shall not be harmed
Other versions
King James Version
And the revenger of blood find him without the borders of the city of his refuge, and the revenger of blood kill the slayer; he shall not be guilty of blood: English Standard Version
and the avenger of blood finds him outside the boundaries of his city of refuge, and the avenger of blood kills the manslayer, he shall not be guilty of blood.New International Version
and the avenger of blood finds him outside the city, the avenger of blood may kill the accused without being guilty of murder.