Learn World Prayer Times, all countries salat times. fasting and iftar times. You can listen to the sound of the azan, the world's most beautiful. incoming calls to your phone, alarm sound, you can set the tone for messages and other notification sounds. Adhan / Azan dua. Muslims use the human voice to announce the times of prayer to the community. The adhan is the call to prayer itself, and the person who calls it is called the muadhan.