(Proof of Divine Authorship)
Why do they not study the Quran carefully? If it were from other than God, they would have found in it numerous contradictions.*
أَفَلا يَتَدَبَّرونَ القُرءانَ وَلَو كانَ مِن عِندِ غَيرِ اللَّهِ لَوَجَدوا فيهِ اختِلٰفًا كَثيرًا
afalaa yatadabbaroonal Qur’aan; wa law kaana min ‘indi ghairil laahi la wajadoo fee ikhtilaafan kaseeraa
*4:82 Although the Quran was revealed during the dark ages, you cannot find any nonsense in it; another proof of divine authorship (see the Introduction and Appendix One).