Sending peace and blessings upon the Messenger aloud after the Adhan using different wordings

Q 3: What is the ruling on sending peace and blessings upon the Messenger of Allah aloud after the Adhan (call to Prayer) using different wordings?

A: It is recommended to repeat after the Mu'adhin (caller to Prayer) except when he says: "Hayy `ala Al-Salah (come to Prayer) and Haya `ala Al-Falah (come to success)" for the listener should then say: "La hawla wa-la quwwata illa billah (There is neither might nor power except with Allah)". When the Adhan is pronounced, the Mu'adhin and the listeners should send peace and blessing upon the Prophet (peace be upon him). They should also say individually rather than collectively: Allahumma rabba hadhihi al-da`wati al-Tammah, wal -Salatil-Qa’imah, ’ati Muhammadan al-Wasilata wal-Fadilah, wab`athhu maqaman mahmudan alladhi wa`atah (Oh Allah, the Lord of this perfect call and of this Prayer, which is going to be established, bestow upon Muhammad Al-Wasilah [the highest position in Paradise] and Al-Fadilah [extra degree of honor] and raise him to Al Maqam Al Mahmud, which You have promised to him). It is not permissible for the Mu'adhin to say this Du`a' (supplication) out loud after the Adhan so that it will not (Part No. 5; Page No. 74) be considered part of it.May Allah grant us success. May peace and blessings be upon our Prophet Muhammad, his family, and Companions.