Numbers 35:24

22“‘But if he shoved him suddenly without hostility, or hurled on him anything without lying in wait,

23or with any stone, by which a man may die, not seeing him, and cast it on him so that he died, and he was not his enemy and not seeking his harm,

24then the congregation shall judge between the striker and the avenger of blood according to these ordinances.

25The congregation shall deliver the man slayer out of the hand of the avenger of blood, and the congregation shall restore him to his city of refuge, where he had fled. He shall dwell therein until the death of the high priest, who was anointed with the holy oil.

26“‘But if the man slayer shall at any time go beyond the border of his city of refuge where he flees,