Devarim 19:5-7

Orthodox Jewish Bible

⁵ As when an ish goeth into the wood with his neighbor to cut wood, his hand swings a stroke with the axe to cut down the tree, the head slippeth from the handle, and strikes upon his neighbor, that he die; he shall flee unto one of those towns, and live;

⁶ Lest the Go’el HaDahm pursue the slayer, while his lev is hot, and overtake him, because the way is long, and slay him; whereas he was not worthy of death, inasmuch as he hated him not in time past.

⁷ Therefore I command thee, saying, Thou shalt separate shalosh arim for thee.