All?h, send your Sal?t on him, O All?h, have mercy on him’ so long as his Wud?’ is not nullified. The prophet ( - صلى الله عليه وسلم -) was asked: ‘How is one’s Wud?’ nullified?’ He ( - صلى الله عليه وسلم -) said: “By passing wind”’. (1)

An-Nawaw? said: ‘it is not Har?m that one passes wind in the mosque but it is better not to do so for the prophet ( - صلى الله عليه وسلم -) said: ‘Verily, angels are harmed with that which harms people’. (2)

[4/ 31] Some people falsely believe that when one passes wind in the mosque, an angel inhales it through his mouth, then exhales it outside the mosque then dies. This is indeed a superstition for such things are of the Ghaib about which none can tell but the prophet ( - صلى الله عليه وسلم -) and he ( - صلى الله عليه وسلم -) never did.

Besides, this superstition contradicts what really happens in such cases; the smell spreads in the atmosphere of the mosque like any other gas does in the air. (3)