Salawat on the Holy Prophet

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.