ציטירנדיקער פּירוש אויף תהילים 48:5

Then Judah approached him: The last letters of these three words create שָׁוֶה (equal.) Judah said to Joseph, "I am equal to you, just as you are a king, I am a king." And for this he demands in the Midrash (Bereishit Rabbah 93:6) For behold the kings have assembled (Psalms 48:5).