Numbers 35:26-28

New American Standard Bible

²⁶ But if at any time ^[a]he goes beyond the border of his city of refuge to which he flees, ²⁷ and the blood avenger finds him outside the border of his city of refuge, and the blood avenger kills ^[b]him, he ^[c]will not be guilty of bloodshed, ²⁸ because he should have remained in his city of refuge until the death of the high priest. But after the death of the high priest the one who committed manslaughter may return to the land of his property.