Joshua 17:1-2, 5-6

This is the lot that fell to the people of Manasseh, Joseph’s firstborn. (Gilead and Bashan had already been given to Makir, Manasseh’s firstborn and father of Gilead, because he was an outstanding fighter.) So the lot that follows went to the rest of the people of Manasseh and their clans, the clans of Abiezer, Helek, Asriel, Shechem, Hepher, and Shemida. These are the male descendants of Manasseh son of Joseph by their clans.

Manasseh’s lot came to ten portions, in addition to the land of Gilead and Bashan on the other side of the Jordan, because Manasseh’s daughters got an inheritance along with his sons. The land of Gilead belonged to the rest of the people of Manasseh.