187. And if you are in doubt as to what We have sent down to Our servant, then produce a Chapter like it, and call upon your helpers beside Allah, if you are truthful.

[2:24] And if you are in doubt as to what We have sent down to Our servant, then produce a Chapter like it, and call upon your helpers beside Allah, if you are truthful.

[52:35] Let them, then, bring forth an announcement like this, if they speak the truth!
[52:39] Have they a ladder unto heaven by means of which they can overhear? Then let their listener bring a manifest authority.

[17:89] Say, ‘If mankind and the Jinn gathered together to produce the like of this Qur’an, they could not produce the like thereof, even though they should help one another.’

[11:14] Do they say, ‘He has forged it?’ Say, ‘Then bring ten Chapters like it, forged, and call on whom you can beside Allah, if you are truthful.’

[11:36] Do they say, ‘He has forged it?’ Say, ‘If I have forged it, on me be my sin and I am clear of the sins you commit.’

[10:39] Do they say, ‘He has forged it?’ Say, ‘Bring then a Surah like unto it, and call for help on all you can besides Allah, if you are truthful.’

[28:50] Say, ‘Then bring a Book from Allah which is a better guide than these two, that I may follow it, if you are truthful.’