Qur'an 4:82 · An-Nisaa

أَفَلَا يَتَدَبَّرُونَ ٱلْقُرْءَانَ ۚ وَلَوْ كَانَ مِنْ عِندِ غَيْرِ ٱللَّهِ لَوَجَدُوا۟ فِيهِ ٱخْتِلَٰفًۭا كَثِيرًۭا

(82) 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.