Surah Al-Ankaboot 29:48 — سُورَةُ العَنكَبُوتِ

وَمَا كُنتَ تَتْلُوا۟ مِن قَبْلِهِۦ مِن كِتَٰبٍۢ وَلَا تَخُطُّهُۥ بِيَمِينِكَ ۖ إِذًۭا لَّٱرْتَابَ ٱلْمُبْطِلُونَ ﴿48﴾

And thou (O Muhammad) wast not a reader of any scripture before it, nor didst thou write it with thy right hand, for then might those have doubted, who follow falsehood.

Surah Al-Ankaboot (The Spider), ayah 48 of 69. Recited by Muhammad Jibreel (محمد جبريل).