The name of Muhammad, the Holy Prophet(sa) of Islam, has been followed by the symbol sa, which is an abbreviation for the salutation Sallallahu ‘Alaihi Wasallam (may peace and blessings of Allah be upon him). The names of other Prophets and Messengers are followed by the symbol as, an abbreviation for ‘Alaihis-Salam (on whom be peace). The actual salutations have not generally been set out in full, but they should nevertheless, be understood as being repeated in full in each case. The symbol ra is used with the name of the companions of the Holy Prophet(sa) and those of the Promised Messiah(as). It stands for Radiyallahu ‘anhu/‘anha/‘anhum (may Allah be pleased with him/with her/with them). rh stands for Rahimahullahu Ta‘ala (may Allah have mercy on him). at stands for Ayyadahullahu Ta‘ala (may Allah be his Helper).
In transliterating Arabic words we have followed the system adopted by the Royal Asiatic Society.