Most Relevant Verses
'The congregation shall deliver the manslayer from the hand of the blood avenger, and the congregation shall restore him to his city of refuge to which he fled; and he shall live in it until the death of the high priest who was anointed with the holy oil.
More Verses on Manslaughter
"He who strikes a man so that he dies shall surely be put to death.
'But if he struck him down with an iron object, so that he died, he is a murderer; the murderer shall surely be put to death.