Allah SWT has made Islam a very beautiful and easy-to-follow religion for all Muslims. Salah is one of the most essential pillars of Islam. It is mandatory upon every Muslim to perform Namaz five times a day.
Therefore, to remind Muslims of the specific time of prayer, it is the duty of the muezzin to give Adhan – call to prayer. It is said that every person who utters the sentences of the Adhan will find their heart full of divine grace and purity.
Jabir bin Abdullah (RA) narrated that Prophet Muhammad (PBUH) said, “Whoever after listening to the Adhan says, ‘Allahumma Rabba hadhihi-dda` watit-tammah, was-salatil qa’imah, ati Muhammadan al-wasilata wal-fadilah, wa b`ath-hu maqaman mahmudan-il-ladhi wa`adtahu,’ then my intercession for him becomes binding on the day of resurrection.
When asked about the way to recite the dua after Adhan, Amr Ibn Al-as narrated that he heard the Messenger (PBUH) of Allah SWT saying, ”When you hear the Muadhin (caller to prayer) then say as he says, then send salutations upon me (once the Adhan is finished, as during the Adhan, one is replying to the Adhan itself), as the one who asks Allah to send peace and salutations upon me, Allah sends ten mercies upon him.
Then ask Allah to grant me Al-wasilah, a place in Jannah, which is only befitting for one slave of Allah, and I hope that I am that one slave. Whoever asks Allah to grant me Al-Wasilah, (my) intercession (for him) becomes binding. (Muslim)