(Ankabooth ) 29 : 48
وَمَا كُنْتَ تَتْلُو مِنْ قَبْلِهِ مِنْ كِتَابٍ وَلَا تَخُطُّهُ بِيَمِينِكَ ۖ إِذًا لَارْتَابَ الْمُبْطِلُونَ
And you didn’t explain before It any Book, nor did you inscribe one with your right hand; if so, the falsehood followers would have doubted.
Since the last form of Adhikr is revealed upon the illiterate Messenger Muhammad, there is no need of doubt that it is from the Lord. Indeed, We have sent down Adhikr, and indeed, We will safeguard It as explained in verse 15: 9. Truth has arrived, and falsehood has perished; indeed, falsehood is to have perished as explained in verse 17: 81. But the Arabic Quran reading Fujjar by rejecting Adhikr are having never-ending doubt concerning every matter. See explanation 7: 173 and 14: 28-30.