Joshua 20:9
These were the appointed cities for all the children of Israel, and for the alien who lives among them, that whoever kills any person unintentionally might flee there, and not die by the hand of the avenger of blood, until he stands before the congregation.
Numbers 35:15
For the children of Israel, and for the stranger and for the foreigner living among them, shall these six cities be for refuge; that everyone who kills any person unwittingly may flee there.
Joshua 20:4
He shall flee to one of those cities, and shall stand at the entrance of the gate of the city, and declare his cause in the ears of the elders of that city. They shall take him into the city with them, and give him a place, that he may live among them.
Joshua 20:6
He shall dwell in that city until he stands before the congregation for judgment, until the death of the high priest that shall be in those days. Then the manslayer shall return, and come to his own city, and to his own house, to the city he fled from.'"