Deuteronomy 19:4

American Standard Version

And this is the case of the manslayer, that shall flee thither and live: whoso killeth his neighbor unawares, and hated him not in time past;

Deuteronomy 19:4 in other translations

This is the case of the man slayer who shall flee there and live: Whoever kills his neighbor unintentionally, and didn’t hate him in time past—

2thou shalt set apart three cities for thee in the midst of thy land, which Jehovah thy God giveth thee to possess it.
3Thou shalt prepare thee the way, and divide the borders of thy land, which Jehovah thy God causeth thee to inherit, into three parts, that every manslayer may flee thither.
4And this is the case of the manslayer, that shall flee thither and live: whoso killeth his neighbor unawares, and hated him not in time past;
5as when a man goeth into the forest with his neighbor to hew wood, and his hand fetcheth a stroke with the axe to cut down the tree, and the head slippeth from the helve, and lighteth upon his neighbor, so that he dieth; he shall flee unto one of these cities and live:
6lest the avenger of blood pursue the manslayer, while his heart is hot, and overtake him, because the way is long, and smite him mortally; whereas he was not worthy of death, inasmuch as he hated him not in time past.