The Messenger of Allah ﷺ said, "Disputing about the Quran is disbelief."
حدثنا أبو معاوية قال حدثنا محمد بن عمرو عن أبي سلمة
قال رسول الله ﷺ مراء في القرآن كفر
No references are available.
Its isnad is sahih. It has already appeared at 7835. The hadith is also found in Abu Dawud 4603, Hakim in Al-Mustadrak 2/223, and Ibn Hibban number 59 of Mawarid.