Numbers 35:13-15

MKJV(i) 13 And of those cities which you shall give, you shall have six cities for refuge. 14 You shall give three cities on this side Jordan, and you shall give three cities in the land of Canaan to be cities of refuge. 15 These six cities shall be a refuge for the sons of Israel, and for the stranger, and for anyone who stays among them, so that everyone who kills any person through error may flee there.