The Holy Quran

مَن كَانَ يَظُنُّ أَن لَّن يَنصُرَهُ اللَّهُ فِي الدُّنْيَا وَالْآخِرَةِ فَلْيَمْدُدْ بِسَبَبٍ إِلَى السَّمَاء ثُمَّ لِيَقْطَعْ فَلْيَنظُرْ هَلْ يُذْهِبَنَّ كَيْدُهُ مَا يَغِيظُ

Whoso is wont to think (through envy) that Allah will not give him (Muhammad) victory in the world and the Hereafter (and is enraged at the thought of his victory), let him stretch a rope up to the roof (of his dwelling), and let him hang himself. Then let him see whether his strategy dispelleth that whereat he rageth!