It was narrated that Bilal came to the Prophet to call him for the Fajr prayer, and was told: "He is sleeping." He said: "As-salatu khairum minan-nawm, As-salatu khairum minan-nawm (The prayer is better than sleep, the prayer is better than sleep). These words were approved of in the Adhan for the Fajr, and that is how it remained.

It was narrated that Ziyad bin Harith As-Suda'i said: "I was with the Messenger of Allah on a journey, and he commanded me to call the Adhan. Bilal wanted to call the Iqamah, but the Messenger of Allah said: 'The brother of Suda' called the Adhan, and the one who calls the Adhan is the one who calls the Iqamah.'"

It was narrated that Abu Hurairah said: "The Messenger of Allah said: 'When the Mu'adh-dhin calls the Adhan, say as he says.'"

Umm Habibah narrated that: When the Messenger of Allah was with her on her day and night, and heard the Mu'adh-dhin calling the Adhan, she heard him saying what he said.

It was narrated that Abu Sa'eed Al-Khudri said: "The Messenger of Allah said: 'When you hear the call (to prayer), say what the Mu'adh-dhin says.'"

It was narrated from Sa'd bin Abu Waqqas that: The Messenger of Allah said: "Whoever says, when he hears the Mu'adh-dhin, 'Wa ana Ash-hadu an la ilaha illallah wahdahu la sharika lahu, wa ash-hadu anna Muhammadan 'abduhu wa rasuluhu, radaytu Billahi rabban wa bil-islami dinan wa bi muhammadin nabiyyan (And I bear witness that none has the right to be worshipped but Allah alone, with no partner, and I bear witness that Muhammad is His slave and Messenger, and I am content with Allah as my Lord, Islam as my religion and Muhammad as my Prophet),' his sins will be forgiven to him."

It was narrated that Jabir bin 'Abdullah said: "The Messenger of Allah said: 'Whoever says when he hears the call to the prayer: "Allahumma Rabba hadhihid-da'watit-tammah was-salatil-qa'imah, ati Muhammadanil-wasilata wal-fadilah, wab'athhu maqaman mahmudanilladhi wa'adtah (O Allah, Lord of this perfect call and the prayer to be offered, grant Muhammad the privilege (of intercession) and also the eminence, and resurrect him to the praised position that You have promised)," my intercession for him will be permitted on the Day of Resurrection.'"

It was narrated from 'Abdullah bin 'Abdur-Rahman bin Abu Sa'sa'ah that: His father who was under the care of Abu Sa'eed said: "Abu Sa'eed said to me: 'If you are in the desert, raise your voice when you say the Adhan, for I heard the Messenger of Allah say: 'No jinn, human, tree or rock will hear it, but it will bear witness for you.'"

It was narrated that Abu Hurairah said: "I heard the Messenger of Allah himself say: 'The Mu'adh-dhin's sins will be forgiven as far as his voice reaches, and every wet and dry thing will pray for forgiveness for him. For the one who attends the prayer, twenty-five Hasanat (good deeds) will be recorded, and it is will be expiation (for sins committed) between them (the two prayers).'"

It was narrated that 'Esa bin Talhah said: "I heard Mu'awiyah bin Abu Sufyan say that Messenger of Allah said: "The Mu'adh-dhin will have the longest necks of all people on the Day of Resurrection."