Challenge of the Qur'an ( 11 : 13 _ 14)

Or do they say, "He invented it"? Say, "Then bring ten s´rahs like it that have been invented and call upon [for assistance] whomever you can besides AllŒh, if you should be truthful."
And if they do not respond to you – then know that it [i.e., the QurÕŒn] was revealed with the knowledge of AllŒh[1] and that there is no deity except Him. Then,[2] would you [not] be Muslims?
Quran ( 11 : 13 _ 14)