וְעַ֣ל ׀ גְּב֣וּל אֶפְרַ֗יִם מִפְּאַ֥ת קָדִ֛ים וְעַד־פְּאַת־יָ֖מָּה רְאוּבֵ֥ן אֶחָֽד׃
And by the border of Ephraim, from the east side even unto the west side: Reuben, one portion.
Read midrashic interpretation of Ezekiel 48:6: and classical rabbinic exegesis.