أَخْبَرَنَا عَمْرُو بْنُ عَوْنٍ ، أَخْبَرَنَا فُضَيْلٌ ، عَنْ عُبَيْدٍ الْمُكْتِبِ ، قَالَ :" رَأَيْتُهُمْ يَكْتُبُونَ التَّفْسِيرَ عِنْدَ مُجَاهِدٍ "

Amr ibn Aoun told us, Fudayl told us, on the authority of Ubaid al-Muttab, he said: “I saw them writing interpretations with Mujahid.”