TSK · Deuteronomy 3:16

But the Israelites defeated him in battle and took possession of his land from the Arnon to the Jabbok, as far as the Ammonites, for the border of the Ammonites was strongly defended.

However, you did not approach the land of the Ammonites, the Wadi Jabbok, the cities of the hill country, or any place else forbidden by the LORD our God.

They crossed the Jordan and camped at Aroer, on the south side of the city, at the wadi of Gad, near Jazer.