Numbers 35:27
and the avenger of blood find him without the border of his city of refuge, and the avenger of blood slay the manslayer; he shall not be guilty of blood,
Exodus 22:2
If the thief be found breaking in, and be smitten so that he dieth, there shall be no bloodguiltiness for him.
Deuteronomy 19:6
lest 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.
Deuteronomy 19:10
that innocent blood be not shed in the midst of thy land, which Jehovah thy God giveth thee for an inheritance, and so blood be upon thee.