Surah An-Nisa, ayah 82

أَفَلَا يَتَدَبَّرُونَ ٱلۡقُرۡءَانَۚ وَلَوۡ كَانَ مِنۡ عِندِ غَيۡرِ ٱللَّهِ لَوَجَدُواْ فِيهِ ٱخۡتِلَٰفٗا كَثِيرٗا ٨٢

Afalā yatadabbarūnal-qur'āna walaw kāna min 'indi ghayrillāhi lawajadū fīhikhtilāfan kathīrā

Then do they not reflect upon the Qur’ān?²⁰³ If it had been from [any] other than Allāh, they would have found within it much contradiction.