مَن كانَ يَظُنُّ أَن لَن يَنصُرَهُ اللَّهُ فِي الدُّنيا وَالآخِرَةِ فَليَمدُد بِسَبَبٍ إِلَى السَّماءِ ثُمَّ ليَقطَع فَليَنظُر هَل يُذهِبَنَّ كَيدُهُ ما يَغيظُ

Whoever should think that Allah will not support [Prophet Muhammad] in this world and the Hereafter - let him extend a rope to the ceiling, then cut off [his breath], and let him see: will his effort remove that which enrages [him]?