Deuteronomy 19:4

“This is the provision for the manslayer, who by fleeing there may save his life. If anyone kills his neighbor unintentionally without having hated him in the past—

This is the rule concerning anyone who kills a person and flees there for safety—anyone who kills a neighbor unintentionally, without malice aforethought.

“If someone kills another person unintentionally, without previous hostility, the slayer may flee to any of these cities to live in safety.

“Now this is the case of the manslayer who may flee there and live there who has killed his neighbor unintentionally, and he did not hate him previously.

And this is the case of the slayer, which shall flee thither, that he may live: Whoso killeth his neighbour ignorantly, whom he hated not in time past;