"Is it not sufficient for them that We have sent down to you the Book to be recited to them?" Meaning: you recite it, while you neither read nor write, and that is sufficient for them if they were to use their intellect.
﴿أَو لم يَكْفِهِمْ أَنَّا أَنْزَلْنَا عَلَيْكَ الْكِتَابَ يُتْلَى عَلَيْهِم﴾ أَيْ: تَتْلُوهُ وَأَنْتَ لَا تَقْرَأُ وَلَا تَكْتُبُ، فَكَفَاهُمْ ذَلِكَ لَوْ عقلوا
