Whoso is wont to think (through envy) that Allah will not give him (Muhammad) victory in the world and the Hereafter ... let him stretch a rope up to the roof (of his dwelling), and let him hang himself. 22:15
Trivia: What should those who doubt that Allah will give Muhammad victory do?
When they reached the Valley of the Ants, an ant exclaimed: O ants! Enter your dwellings lest Solomon and his armies crush you, unperceiving.
And (Solomon) smiled, laughing at her speech, and said: My Lord, arouse me to be thankful for Thy favour wherewith Thou hast favoured me and my parents, and to do good that shall be pleasing unto Thee, and include me in (the number of) Thy righteous slaves. Quran 27:18-19
