He is the Prophet of all people and genies. It is wâjib for every nation living in every century to follow him. Every Muslim should help his religion, adapt himself to his habits, mention his blessed name very often, say salât and salâm for him respectfully and with love whenever he mentions or hears his blessed name. A Muslim should want with love to see his blessed beauty, and love and respect the Qur’ân and Islam, which he brought.
The book Mir’âti Kâinât says: “Ignorant and lazy people write initials [such as (SAW)] instead of ‘sall-Allâhu ’alaihi wa sallam.’ This is not advisable. We should carefully avoid this.” It is stated in the chapter about namâz in Ibni ’Âbidîn: “It is farz to say the (certain prayer) Salawât (pronounced as a benediction over our Prophet’s soul) once in one’s lifetime. It is wâjib to say it each time one says, hears, reads or writes (his blessed name) for the first time, and it is mustahab to pronounce this blessed benediction whenever the blessed name (of the Prophet) is repeated.”
Endless Bliss First Fasicle | Page 244