What did the Messenger of Allah (peace be upon him) see upon leading the people in prayer that made him say, "By Him in Whose hand Is the life of Muhammad, if you could see what I see, you would have laughed little and wept much more"?
 Anas reported:                      The Messenger of Allah (may peace be upon him) one day led us in the prayer. and when he completed the Prayer he turned his face towards us and said: 0 People, I am your Imam, so do not precede me in bowing and prostration and in standing and turning (faces, i. e. In pronouncing salutation), for I see you in front of me and behind me, and then said: By Him in Whose hand Is the life of Muhammad, if you could see what I see, you would have laughed little and wept much more. They said: What did you see, Messenger of Allah? He replied: (I saw) Paradise and Hell.