Joshua 13:11-15

and Gilead, and the territory of the Geshurites and Maacathites, and all Mount Hermon, and all Bashan as far as Salecah;

all the kingdom of Og in Bashan, who reigned in Ashtaroth and in Edrei (he alone was left of the remnant of the Rephaim); for Moses struck them and drove them out.

But the sons of Israel did not drive out the Geshurites or the Maacathites; instead, Geshur and Maacath live among Israel to this day.

Only to the tribe of Levi he did not give an inheritance; the offerings by fire to the Lord, the God of Israel, are their inheritance, as He spoke to him.

So Moses gave an inheritance to the tribe of the sons of Reuben according to their families.