Ibn Mas'ud said that a man was mentioned in the Prophet’s presence, and he was told that he continued sleeping till morning, never having got up to pray. He said, “That is a man in whose ear (or, in whose ears) the devil has urinated.”
Al-Mughira said that the Prophet got up at night to such an extent that his feet became swollen. On being asked why he did this when his former and latter sins had been forgiven him, he replied, “Should I not be a grateful servant?”
Umm Salama said that God’s Messenger awoke one night with a start and said, “Glory be to God. What treasures have been sent down tonight, and what trials have been sent down! Who will waken those who are in the inner chambers (meaning his wives) in order that they may pray? Many a woman who is clothed in this world will be naked in the next.”
Abu Huraira reported God’s Messenger as saying, “When one of you goes to sleep the devil ties three knots at the back of his neck, sealing every knot with, ‘You have a long night, so sleep’. So if one awakes and mentions God a knot will be loosened, if he performs ablution a knot will be loosened, and if he prays a knot will be loosened, and in the morning he will be active and in good spirits; otherwise he will be in bad spirits and sluggish in the morning.”
