Devarim 19:6-8

Orthodox Jewish Bible

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.

⁸ And if Hashem Eloheicha enlarge thy territory, as He hath sworn unto Avoteicha, and give thee kol ha’aretz which He promised to give unto Avoteicha;