Numbers 35:25-27

New Revised Standard Version, Anglicised Catholic Edition

²⁵ and the congregation shall rescue the slayer from the avenger of blood. Then the congregation shall send the slayer back to the original city of refuge. The slayer shall live in it until the death of the high priest who was anointed with the holy oil. ²⁶ But if the slayer shall at any time go outside the bounds of the original city of refuge, ²⁷ and is found by the avenger of blood outside the bounds of the city of refuge, and is killed by the avenger, no blood-guilt shall be incurred.