The Adhan is a call for Muslims to prepare for prayer. It is recited by the muezzin from the mosque, with phrases that glorify Allah and remind people of the importance of coming to prayer and seeking success. The Adhan begins with "Allahu Akbar," meaning "God is the Greatest," followed by "Ashhadu an la ilaha illallah," meaning "I bear witness that there is no god but Allah."
The Adhan was first prescribed during the time of the Prophet Muhammad ﷺ as a signal for prayer times. Beyond being a reminder, it also serves to unite the community and invite people toward goodness.
