Joshua 20:9
These were appointed to be cities for all the Israelis and for the foreigner who lives among them, so that whoever kills anyone unintentionally may run there and not die at the hands of a closely related avenger until he stands for trial before the community.
Numbers 35:15
that is, places of refuge for the Israelis, the resident alien, and any travelers among them. Anyone who kills a person inadvertently may flee there."
Joshua 20:4
He may run to one of those cities, stand at the entrance to the city gate, and tell his side of the story to the elders of the city. They are to bring him inside the city with them and provide him a place to live among them.
Joshua 20:6
He is to live in that city until he stands trial before the community, until the death of the one who is high priest at that time. Then the killer may return to his own city and to his own home, that is, to the city from which he fled."