Al ‘Ankabut Ayah 48

وَمَا كُنتَ تَتْلُواْ مِن قَبْلِهِۦ مِن كِتَـٰبٍ وَلَا تَخُطُّهُۥ بِيَمِينِكَ‌ۖ إِذًا لَّٱرْتَابَ ٱلْمُبْطِلُونَ ٤٨ You ?O Prophet? could not read any writing ?even? before this ?revelation?, nor could you write at all. Otherwise, the people of falsehood would have been suspicious.