He said, "Do you know what you did with Joseph and his brother when you were ignorant?"
The Saheeh International Quran Translation
قَالَ هَلْ عَلِمْتُم مَّا فَعَلْتُم بِيُوسُفَ وَأَخِيهِ إِذْ أَنتُمْ جَٰهِلُونَHe said, "Do you know what you did with Joseph and his brother when you were ignorant?"