اَوۡ تُسۡقِطَ السَّمَآءَ كَمَا زَعَمۡتَ عَلَيۡنَا كِسَفًا اَوۡ تَاۡتِيَ بِاللّٰهِ وَالۡمَلٰٓئِكَةِ قَبِيۡلًاۙ‏

Or you make the heaven fall upon us in fragments as you have claimed or you bring Allah and the angels before [us]