وَإِنْ کُنْتُمْ فِى رَیْب مِّمَّا نَزَّلْنَا عَلَى عَبْدِنَا فَأْتُواْ بِسُورَة مِّنْ مِّثْلِهِ وَادْعُواْ شُهَدَآءَکُمْ مِّن دُونِ اللهِ إِنْ کُنْتُمْ صَـدِقِینَ(( 23 )) 23- AND IF YOU ARE IN DOUBT CONCERNING THAT WHICH WE HAVE SENT DOWN TO OUR SERVANT, (THE PROPHET) THEN PRODUCE A CHAPTER LIKE IT, AND CALL YOUR WITNESSES APART FROM ALLAH IF YOU ARE TRUTHFUL. فَإِن لَّمْ تَفْعَلُواْ وَلَن تَفْعَلُواْ فَاتَّقُواْ النَّارَ الَّتِى وَقُودُهَا النَّاسُ وَالْحِجَارَةُ أُعِدَّتْ لِلْکَـفِرینَ(( 24 )) 24- BUT IF YOU DO IT NOT, AND NEVER SHALL YOU DO IT, THEN GUARD YOURSELVES AGAINST THE FIRE WHOSE FUEL IS MEN AND STONES PREPARED FOR UNBELIEVERS.