It says...

It says: “And when Our Clear Signs are recited unto them, those who do not expect the meeting with Us, say: ‘Bring us a Qur’an other than this, or alter it.’...” These ignorant people did not want the Prophet (S) to guide them as a leader; they rather invited him to follow in the footsteps of their own superstitious conjectures.

The Qur’an explicitly enlightens them regarding their grave mistake, ordering the Prophet (S) to tell them that it is impossible for him to alter the Divine revelation by himself. The verse says: “…Say: ‘It is not for me to alter it of my own accord...” Then, to articulate further, he should add that he would only follow what was revealed to him, and that not only he…