"He then raised his hands, and kept raising them till the whiteness under his armpits was visible. He then turned his back to the people and inverted or turned round his cloak while keeping his hands aloft. He then faced the people, descended and prayed two rak'ahs. Allah then produced a cloud, and the storm of thunder and lightning came on. Then the rain fell by Allah's permission, and before he reached his mosque streams were flowing. When he saw the speed with which the people were seeking shelter, he (peace be upon him) laughed till his back teeth were visible. Then he said: I testify that Allah is Omnipotent and that I am Allah's servant and apostle."