وَإِن كُنتُمْ فِى رَيْبٍ مِّمَّا نَزَّلْنَا عَلَىٰ عَبْدِنَا فَأْتُوا۟ بِسُورَةٍ مِّن مِّثْلِهِۦ وَٱدْعُوا۟ شُهَدَآءَكُم مِّن دُونِ ٱللَّهِ إِن كُنتُمْ صَـٰدِقِينَ
Wa in kuntum fee raibim mimmaa nazzalnaa 'alaa 'abdinaa fatoo bi Sooratim mim mislihee wad'oo shuhadaaa'akum min doonil laahi in kuntum saadiqeen
And if you are in doubt about what we have sent down to our servant, then produce a single chapter like it, and call on your witnesses besides God, if you are truthful.