Joshua 20:9

20:9 These were the cities of refuge appointed for all the Israelites and for resident foreigners living among them. Anyone who accidentally killed someone could escape there and not be executed by the avenger of blood, at least until his case was reviewed by the assembly.

Joshua 21:27

21:27 They assigned to the Gershonite clans of the Levites the following cities: from the half-tribe of Manasseh: Golan in Bashan (a city of refuge for one who committed manslaughter) and Beeshtarah, along with the grazing areas of each – a total of two cities;