وَإِن And if كُنتُمْ you are فِى in رَيْبٍۢ doubt مِّمَّا about what نَزَّلْنَا We have revealed عَلَىٰ to عَبْدِنَا Our slave فَأْتُوا۟ then produce بِسُورَةٍۢ a chapter مِّن [of] مِّثْلِهِۦ like it وَٱدْعُوا۟ and call شُهَدَآءَكُم your witnesses مِّن from دُونِ other than ٱللَّهِ Allah إِن if كُنتُمْ you are صَـٰدِقِينَ truthful ٢٣
And if you are in doubt about what We have sent down [i.e., the Qur’ān] upon Our Servant [i.e., Prophet Muḥammad (ﷺ)], then produce a sūrah the like thereof and call upon your witnesses [i.e., supporters] other than Allāh, if you should be truthful.
— Come To Light