Joshua 22:9-10

9So the sons (descendants) of Reuben and the sons of Gad and the half-tribe of Manasseh returned home and departed from the [other] sons (western tribes) of Israel at Shiloh which is in the land of Canaan, to go to the land of Gilead, to the land of their own which they had possessed, in accordance with the command of the Lord through Moses.

10When they came to the region of the Jordan which is in the land of Canaan, the sons of Reuben and the sons of Gad and the half-tribe of Manasseh built an altar there by the Jordan, an altar that was great to behold.