"Then do they not reflect upon the QurÕan? If it had been from [any] other than Allah,..."

Then do they not reflect upon the QurÕan? If it had been from [any] other than Allah, they would have found within it much contradiction.
Quran ( 4 : 82 )
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Holy_Books_In_The_Quran
https://noorinternational.net/articles/Holy-Books-In-The_Quran