Numbers 35:22-24

ERV(i) 22 But if he thrust him suddenly without enmity, or hurled upon him any thing without lying in wait, 23 or with any stone, whereby a man may die, seeing him not, and cast it upon him, so that he died, and he was not his enemy, neither sought his harm: 24 then the congregation shall judge between the smiter and the avenger of blood according to these judgments: