Joshua 22:9-10

9So the children of Reuben, the children of Gad and the half-tribe of Manasseh returned and departed from Bnei-Yisrael at Shiloh in the land of Canaan, to go to the land of Gilead, to the land of their inheritance that they had possessed, according to the mouth of Adonai by Moses’ hand.

10Now when they came to the region near the Jordan in the land of Canaan, the children of Reuben, the children of Gad and the half-tribe of Manasseh built there an altar by the Jordan—a large, conspicuous altar.