'Ata' bin Abi Rabah reported that he heard 'A'isha, the wife of the Apostle of Allah ( صلی اللہ علیہ وسلم ) , as saying: When there was on any day windstorm or dark cloud (its effects) could be read on the face of the Messenger of Allah ( صلی اللہ علیہ وسلم ) , and he moved forward and backward (in a state of anxiety) ; and when it rained, he was delighted and it (the state of restlessness) disappeared. 'A'isha said: I asked him the reason of this anxiety and he said: I was afraid that it might be a calamity that might fall upon my Ummah, and when he saw rainfall he said: It is the mercy (of Allah).