Numbers 35:17
And if he smite him with throwing a stone, wherewith he may die, and he die, he is a murderer: the murderer shall surely be put to death.
Cross-reference
Exodus 21:18
Contrast
Exodus 21:18 describes a non-lethal strike with a stone, contrasting with Numbers 35:17 where the stone is lethal, showing the legal distinction based on outcome.