Bereishit 45:3 states "וַיֹּ֨אמֶר יוֹסֵ֤ף אֶל־אֶחָיו֙ אֲנִ֣י יוֹסֵ֔ף הַע֥וֹד אָבִ֖י חָ֑י וְלֹֽא־יָכְל֤וּ אֶחָיו֙ לַעֲנ֣וֹת אֹת֔וֹ כִּ֥י נִבְהֲל֖וּ מִפָּנָֽיו"
In his book, Vedibarta Bam, Moshe Bogomilsky, writes "When Yosef revealed himself to his brothers, he knew that they would be reluctant to believe him. He therefore gave them certain signs to prove who he was". This explanation is linked to a commentary from the אמרי יהודה, however, there are multiple versions available on HebrewBooks. Unfortunatley I am unable to locate this explanation from the אמרי יהודה. Does anyone know where to find this and what does the אמרי יהודה say more on this pasuk?