Challenge of the Qur'an ( 17 : 88 _ 89)

Say, "If mankind and the jinn gathered in order to produce the like of this Qur'an , they could not produce the like of it, even if they were to each other assistants."
And We have certainly diversified for the people in this Qur'an from every [kind of] example, but most of the people refused except disbelief.
Quran ( 17 : 88 _ 89)