أَفَلَا يَتَدَبَّرُونَ ٱلۡقُرۡءَانَۚ وَلَوۡ كَانَ مِنۡ عِندِ غَيۡرِ ٱللَّهِ لَوَجَدُواْ فِيهِ ٱخۡتِلَٰفٗا كَثِيرٗا ٨٢
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.
Translation: Saheeh International (English)
1 i.e., its meanings and its objective.
Each word's meaning and sound
Why do these people not reflect over the Qur'ān and study it until they realise that it contains no differences or inconsistency, so that they can accept the truth of what you brought? Had it been from anyone other than Allah, they would have found inconsistencies in its rulings and differences in its meanings.
Al-Mukhtasar in interpreting the Noble Quran