Nabi Musaa (alayhis salaam) said: "It is indeed surprising that a man inspite of his belief in the Fire of Jahannum is still able to laugh, and inspite of his belief in Maut he is able to be happy. Inspite of believing in the Reckoning, he commits evil deeds. Inspite of believing in Taqdeer, he grieves. Inspite of observing the world with its changes, he feels contented with it. Inspite of believing in Jannat, he refrains from righteous deeds."