Numbers 35:15
“These six cities shall be a refuge, both for the children of Israel, and for the stranger, and for the sojourner among them: that every one that killeth any person unawares may flee thither.”
And of these cities which ye shall give six cities shall ye have for refuge.
Ye shall give three cities on this side Jordan, and three cities shall ye give in the land of Canaan, which shall be cities of refuge.
These six cities shall be a refuge, both for the children of Israel, and for the stranger, and for the sojourner among them: that every one that killeth any person unawares may flee thither.
And if he smite him with an instrument of iron, so that he die, he is a murderer: the murderer shall surely be put to death.
And if he smite him with throwing a stone, wherewith he may die, and he die, he is a murderer: the murderer shall surely be put to death.
Counter-Arguments
The strongest case that this verse does not belong in this theme.

Related Verses
“These were the cities appointed for all the children of Israel, and for the stranger that sojourneth among them, that whosoever killeth any person at unawares might flee thither, and not die by the hand of the avenger of blood, until he stood before the congregation.”
“Then ye shall appoint you cities to be cities of refuge for you; that the slayer may flee thither, which killeth any person at unawares.”
“That the slayer that killeth any person unawares and unwittingly may flee thither: and they shall be your refuge from the avenger of blood.”
“That the slayer might flee thither, which should kill his neighbour unawares, and hated him not in times past; and that fleeing unto one of these cities he might live:”
“And they shall be unto you cities for refuge from the avenger; that the manslayer die not, until he stand before the congregation in judgment.”