Hadith: Do not argue about the Qur’an, for arguing about it constitutes disbelief

عن عبد الله بن عمرو رضي الله عنهما أن النبي صلى الله عليه وسلم قال: «لا تُجادِلوا في القرآن؛ فإنَّ جِدالًا فيه كُفرٌ».
[صحيح] - [رواه أبو داود الطيالسي]

‘Abdullāh ibn ‘Amr (may Allah be pleased with him) reported that the Prophet (may Allah's peace and blessings be upon him) said: "Do not argue about the Qur’an, for arguing about it constitutes disbelief."
Sahih/Authentic. - [Abu Dawood At-Tayaalisi]

Explanation

The Prophet (may Allah's peace and blessings be upon him) forbade arguing about the Qur’an, for doing so leads to disbelief. Also, one might hear a verse or a word of the Qur’an being read in a certain way that he is unaware of, so he would hasten to judge the reader as mistaken, attribute to him that he reads something other than the Qur’an, or argue with him about the meaning of a verse that he is not versed in, thereby misguiding him. Argument might distract one from the truth, even if the point is made. Therefore, argumentation of this kind has been forbidden and is called 'disbelief', because it leads the arguer to disbelief. Argumentation, when it is free of such implications, is allowed or commendable, such as when asking to learn or to show the truth. In this regard, Allah, the Exalted, says: {And argue with them in the fairest manner.} [Sūrat An-Nahl: 125]