﴿ أَوْ تُسْقِطَ ٱلسَّمَآءَ كَمَا زَعَمْتَ عَلَيْنَا كِسَفًا أَوْ تَأْتِىَ بِٱللَّهِ وَٱلْمَلَٰٓئِكَةِ قَبِيلًا ﴾

“or thou cause the skies to fall down upon us in smithereens, as thou hast threatened, or [till] thou bring God and the angels face to face before us,”

(Or thou cause the heaven to fall upon us piecemeal) as a punishment, (as thou hast pretended, or bring Allah and the angels as a warrant) as witnesses for what you say;