Adhan is one of the most vital elements that constitute a major part of Islam. It is an excellent form of worship in which a Muaddin (a person who calls for Adhan) invites the Muslims to offer the mandatory worship of Salah.
Allah (S.W.T) has made Salah fard on every Muslim man and woman. As a worshipper of Allah, all Muslims are obliged to respond to the Adhan in a proper manner that is prescribed in the teachings of Islam.
While hearing the Adhan, a Muslim must respond to it by following the Sunnah. There is a list of five things that a Muslim should do if he/she hears the Adhan.
Repeat the words of the Muaddin
As soon as you hear the adhan, you must repeat exactly what the Muaddin says. In order to repeat the Muaddin words, you must pay full attention to his words. You will respond when the Muaddin says “Haiyi `alassala, Hayya ala Al-Falah”, Your response will be:”La hawla wala quwwata ella billahill alliyul Azeem” (There is neither might nor any power except with Allah)', and added: ‘We heard your Prophet say the same' ” (Bukhari). You are the Muawiya (the one who answers the muaddin’s call). You must remember your important role as Muawiya.
To invoke blessings on the beloved Prophet Muhammad (P.B.U.H)
As soon as the adhan is over, it is mandatory to send Salah on our beloved prophet Muhammad (P.B.U.H). (i.e say “Allahumma salli ala sayyidina Mohamad”).
The Messenger of Allah (ﷺ) said: «… Then send Salah upon me, because whoever sends Salah upon me, Allah will send Salah upon him ten times due to it» (Muslim). You can also recite Darood-e-Ibrahimi after Adhan.
Dua after Adhan
Wasilah means a way or a method by which a person achieves his/her goals, but in this case, it represents the highest ranks of Jannah which will be awarded to Prophet Muhammad (P.B.U.H) by the grace of Allah (S.W.T).
We make this dua because Prophet Muhammad (P.B.U.H) has been given the right of intercession by Allah (S.W.T) the lord of the universe. We all will seek for forgiveness from Allah on the Day of Judgment therefore while making this dua after adhaan, we actually request and plea Prophet Muhammad (P.B.U.H) to ask Allah to minimize our difficulties on the Day of Judgment.
Recitation of Al-Shahada
Here at this step, it is mandatory to declare one's’ acceptance to Allah and his prophet Muhammad (P.B.U.H). Allah is all alone and the sole creator of the universe and Hazrat Muhammad (P.B.U.H) is the last messenger of Allah. Sahih Muslim Vol. 1, Book 4, Hadith 749
Make your dua to Allah
Once you have finished all the above 4 steps, you must make your personal dua with Allah. Allah (S.W.T) is so merciful and kind; He will answer all your duas. Insha Allah. Don’t talk during Adhan. If you are having a conversation you must stop and respect the adhan.