4:82
أَفَلَا يَتَدَبَّرُونَ ٱلْقُرْءَانَ ۚ وَلَوْ كَانَ مِنْ عِندِ غَيْرِ ٱللَّهِ لَوَجَدُوا۟ فِيهِ ٱخْتِلَـٰفًا كَثِيرًا٨٢
Then do they not reflect upon the Qur’ān?1 If it had been from [any] other than Allāh, they would have found within it much contradiction.
— Saheeh International