Sayyiduna Abdullah bin Amr (may Allah be pleased with him) narrates that the Prophet (peace and blessings be upon him) said: "Arguing about the Qur'an is disbelief."
Al-Tabarani recorded it in al-Mu'jam al-Kabir; it contains a narrator, Musa bin Ubaydah, and he is extremely da'if (weak).
Hadith Referenceمجمع الزوائد ومنبع الفوائد / كتاب العلم / 709