Numbers 35:18

Overview - Numbers 35
1	Eight and forty cities for the Levites, with their suburbs, and measure thereof.
6	Six of them are to be cities of refuge.
9	The laws of murder and manslaughter.
31	No satisfaction for murder.

Numbers 35:18  (King James Version)
Or if he smite him with an hand weapon of wood, wherewith he may die, and he die, he is a murderer: the murderer shall surely be put to death.