Muslims are required to offer Prayers five times every day. A call for Prayers is given before each Prayer. The same call for Prayers (Adhan) resonates throughout the world using the same words that were approved by Muhammad (Peace be upon him):

Allah O Akbar (God is Great)
Allah O Akbar (God is Great)
Allah O Akbar (God is Great)
Allah O Akbar (God is Great)
Ash-hado an La Ilaha Illallah (I testify that there is no one worthy of worship except Allah)
Ash-hado an La Ilaha Illallah (I testify that there is no one worthy of worship except Allah)
Ash-hado anna Muhammadar Rasul Allah (I testify that Muhammad is the Messenger of Allah)
Ash-hado anna Muhammadar Rasul Allah (I testify that Muhammad is the Messenger of Allah)
Hayya ‘Alas Salah (Come to prayers)
Hayya ‘Alas Salah (Come to prayers)
Hayya ‘Alal Falah (Come to success)
Hayya ‘Alal Falah (Come to success)
Allah O Akbar (God is Great)
Allah O Akbar (God is Great)
La Ilaha Illallah (There is no one worthy of worship except Allah)

An additional phrase Assalatu Khayrum Minan Nawm (Prayer is better than sleep) is repeated twice after Hayya ‘Alal Falah (Come to success) in the call for the Morning Prayers (Fajr Salah).