Adhan
Adhan is the Islamic ritual call to prayer. It was explained to Cat Stevens (now Yusuf Islam) as "music for God." Stevens said, "I thought, music for God? I’d never heard that before. I’d heard of music for money, music for fame, music for personal power, but music for God!" Adhan is called out by the muezzin in the mosque, sometimes from a minaret, five times a day summoning Muslims for mandatory (fard) prayers (salah). There is a second call known as iqama (set up) that summons Muslims to line up for the beginning of the prayers. The main purpose behind the loud pronouncement of adhan five times a day in every mosque is to make available to everyone an easily intelligible summary of Islamic belief. It is intended to bring to the mind of every believer and non-believer the substance of Islamic beliefs, or its spiritual ideology. Loudspeakers are sometimes installed on minarets for the purpose.
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Sunnis state that the adhan was not written or said by the Islamic prophet, Muhammad, but by one of his Sahabah (his companions). Shi'a sources state that it is Muhammad who, according to God's command, ordered the adhan as a means of calling Muslims to prayer. Shi'a Islam teaches that no one else contributed, or had any authority to contribute, towards the composition of the adhan.
Sunnis state that the adhan was not written or said by the Islamic prophet, Muhammad, but by one of his Sahabah (his companions). Shi'a sources state that it is Muhammad who, according to God's command, ordered the adhan as a means of calling Muslims to prayer. Shi'a Islam teaches that no one else contributed, or had any authority to contribute, towards the composition of the adhan.