Liaison office of Grand Ayatullah Sayyid Ali Al Sistani (L.M.H.L) in London, Europe, North and South America.
1133. It is Mustahab that whenever a person hears or utters the sacred
name of the holy Prophet of Islam like, Muhammad or Ahmad, or his title like,
Mustafa or his patronymic appellation like Abul Qasim, he should say, "Allahumma
salli 'ala Muhammadin wa Ali Muhammad", even if that happens during the namaz.
1134. It is Mustahab that after writing the sacred name of the holy
Prophet, Salawat also be written with it. And it is better that whenever his
name is mentioned, Salawat be sent on him.