‏الصلاة : Hadeeth No:735 Ibn Umar reported: When the Muslims came to Medina, they gathered and sought to know the time of prayer but no one summoned them. One day they discussed the matter, and some of them said: Use something like the bell of the Christians and some of them said: Use horn like that of the Jews. Umar said: ...

‏الصلاة : Hadeeth No:1572 'A'isha reported: I have never seen the Messenger of Allaah (sallAllaahu alayhi wa sallam) hastening as much in observing supererogatory as two rak'ahs before the (Fard) of the dawn prayer....