Numbers 35:21-23

Evangelical Heritage Version

²¹ or in hostility strikes him with his hand so that he dies, that person who struck him must certainly be put to death. He is a murderer. The avenger of blood is to put the murderer to death when he apprehends him.

²² But if a person pushes someone suddenly without hostility or throws any object at him without malicious intent, ²³ or if without looking he drops a stone on someone big enough to kill him and that person dies, since that person was not his enemy, and he did not seek to harm him,