وَهُمْ لَمْ يَعْلَمُوا أَنَّ يُوسُفَ فَاهِمٌ، لِأَنَّ ٱلتُّرْجُمَانَ كَانَ بَيْنَهُمْ.
And they knew not that Joseph understood them; for he spake unto them by an interpreter.