It is narrated from Sayyiduna Abdullah bin Amr (may Allah be pleased with them both) that the Messenger of Allah (peace and blessings be upon him) said: "When you hear the mu'adhdhin giving the adhan, say as he says, and send blessings upon me, for whoever sends blessings upon me, Allah sends ten mercies upon him. And ask Allah for al-Wasilah for me, for al-Wasilah is a station in Paradise that befits only one servant among the servants of Allah, and I hope that I will be he. Whoever asks for it for me, my intercession becomes due for him on the Day of Resurrection."
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الصلاة / 1930
Sayyiduna Abdullah bin Amr (may Allah be pleased with them both) said that he heard the Prophet (peace and blessings be upon him) say: "When you hear the mu'adhdhin," and then al-Muqri narrated to us a hadith like it.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الصلاة / 1931
Ka'b bin Alqamah (may Allah have mercy on him) narrated it with the same chain and the same meaning, and said: I hope that I will be he. In the hadith it says that he (peace and blessings be upon him) said: "Whoever asks for al-Wasilah for me, my intercession becomes due for him."
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الصلاة / 1932
It is narrated from Sayyiduna Jabir bin Abdullah (may Allah be pleased with them both) that the Messenger of Allah (peace and blessings be upon him) said: "Whoever, on hearing the adhan, says: 'Allahumma inni as'aluka bi-haqqi hadhihi al-da'wati al-tammati wa al-salati al-qa'imah, ati Muhammadan al-wasilata wa al-fadilah, wab'athhu al-maqam al-mahmud alladhi wa'adtahu, innaka la tukhlifu al-mi'ad' (O Allah, I ask You by the right of this perfect call and the prayer about to be established: grant Muhammad (peace and blessings be upon him) al-Wasilah and excellence, and raise him to the Praised Station that You have promised him; indeed You do not break Your promise), my intercession becomes due for him."
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الصلاة / 1933
Sayyiduna Sa'd bin Abi Waqqas (may Allah be pleased with him) narrates from the Messenger of Allah (peace and blessings be upon him): "Whoever, on hearing the mu'adhdhin give the adhan, says: 'Wa ana ashhadu an la ilaha illallahu wahdahu la sharika lahu wa anna Muhammadan 'abduhu wa rasuluhu, raditu billahi rabban wa bi-Muhammadin rasulan wa bil-Islami dinan' (And I too bear witness that there is no god worthy of worship but Allah, alone, without partner, and that Muhammad (peace and blessings be upon him) is His servant and His Messenger; I am pleased with Allah as Lord, with Muhammad (peace and blessings be upon him) as Messenger, and with Islam as religion), he will be forgiven."
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الصلاة / 1934
It is narrated from Umm Salamah (may Allah be pleased with her) that the Messenger of Allah (peace and blessings be upon him) taught me: "At the time of the Maghrib adhan, say:
'Allahumma inna hadha iqbalu laylika wa idbaru naharika wa aswatu du'atika faghfir li' (O Allah, indeed this is the coming of Your night, the departure of Your day and the voices of Your callers, so forgive me)."
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الصلاة / 1935