Commentaire sur Josué 16:1

The lot for the descendants of Yoseif came out at the northern border which marked the end of Yehoshua’s conquest. There, the lot fell for them, as stated below, “And the house of Yoseif will remain in their boundary on the north.”¹See chapter 18:5. Much of the land [of Eretz Yisroel] lay between [the border of] the descendants of Yehudah, [and the border of] the descendants of Yoseif. The other tribes took their inheritance from this area, as we find below regarding the tribe of Binyomin, “And the boundary of their lot was between the descendants of Yehudah [to the south] and the descendants of Yoseif [to the north.]

From the Jordan at Yericho to the waters of Yericho to the east. This is where the eastern border begins.

To the desert that goes up from Yericho. The boundary goes up from Yericho to the desert and comes westward to Beis-eil.