﴿ قُل لَّآ أَمْلِكُ لِنَفْسِى نَفْعًۭا وَلَا ضَرًّا إِلَّا مَا شَآءَ ٱللَّهُ ۚ وَلَوْ كُنتُ أَعْلَمُ ٱلْغَيْبَ لَٱسْتَكْثَرْتُ مِنَ ٱلْخَيْرِ وَمَا مَسَّنِىَ ٱلسُّوٓءُ ۚ إِنْ أَنَا۠ إِلَّا نَذِيرٌۭ وَبَشِيرٌۭ لِّقَوْمٍۢ يُؤْمِنُونَ ﴾

“Say [O Prophet]: "It is not within my power to bring benefit to, or avert harm from, myself, except as God may please. And if I knew that which is beyond the reach of human perception, abundant good fortune-would surely have fallen to my lot, and no evil would ever have touched me. I am nothing but a warner, and a herald of glad tidings unto people who will believe."”

(Say: For myself I have no power to benefit, nor power to hurt�) [7:188]. Said al-Kalbi: �The people of Mecca said: �O Muhammad, does not your Lord inform you about lower prices before they go up, and thus you buy and make profit? And does He not inform you about the land which is about to suffer drought and, thus, you travel to a land which is more fertile?� And so Allah, exalted is He, revealed this verse�.