The Beginning of Az’aan

Abdullah bin U’mar said: “When the Muslims came to Madinah, they would gather and they would wait for the time for the prayer to come, but no one would watch and announce the times. One day they spoke about that. Some of them said: ( to call the people for prayers) ‘Use a bell like the bell of the Christians.’ Some of them said ‘Use a horn like the horn of the Jews.’ U’mar said: ‘It is better to send a man to call (the people) to prayer.’ The Messenger of Allaah (Saws) said: ‘O Bilal, get up and give the call to prayer.”‘(Muslim)