Institution of the Adhan (Call to Prayer)

The Muslims discussed how to call people to prayer, considering bells (Christian) and horns (Jewish) before Abdullah ibn Zayd reported a dream in which a man taught him the words of the adhan. Umar confirmed he had seen a similar vision. The Prophet ﷺ recognized the dream as true and instructed Bilal ibn Rabah, whose powerful voice was known throughout Medina, to make the call. Bilal thus became the first muezzin of Islam, his voice ringing out over Medina five times daily.