It was narrated that Jabir bin 'Abdullah said: "The Messenger of Allah (ﷺ) 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 that Abu Hurairah said: "I heard the Messenger of Allah (ﷺ) 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 Ibn 'Abbas said: "The Messenger of Allah (ﷺ) said: 'Let the best of you give the call to prayer (Adhan), and let those who are most versed in the Qur'an lead you in prayer.'"

It was narrated that Ibn 'Abbas said: "The Messenger of Allah (ﷺ) said: 'Whoever calls the Adhan for seven years, seeking reward (from Allah), Allah will decree for him deliverance from the Fire.'"

It was narrated from Ibn 'Umar that: The Messenger of Allah (ﷺ) said: "Whoever calls the Adhan for twelve years, he will be guaranteed Paradise, and for each day sixty Hasanat (good deeds) will be recorded for him by virtue of his Adhan, and thirty Hasanat by virtue of his Iqamah."

It was narrated that Anas bin Malik said: "They looked for something by means of which they could call out informing of (the time of) the prayer. Then Bilal was commanded to say the phrases of the Adhan twice and the phrases of the Iqamah once."

'Abdur-Rahman bin Sa'd bin 'Ammar bin Sa'd narrated (from his great-grandfather of the Messenger of Allah) that: In the Adhan of Bilal, the phrases were two by two, and in his Iqamah they were said once.

It was narrated that Abu Rafi' said: "I saw Bilal calling the Adhan in fron of Allah's Messenger, (saying the phrases) two by two, and saying each phrase once in the Iqamah."

It was narrated that 'Uthman said: "The Messenger of Allah (ﷺ) said: 'Whoever hears the Adhan when he is in the mosque, then goes out and does not go out for any (legitimate) need and does not intend to return, is a hypocrite.'"