William Montgomery Watt 
Islamic Creeds [PDF ebook] 

There are no official creeds in Islam, but there is broad agreement in mainstream Sunnite Islam about the chief doctrines. Over the centuries these have been expressed in creeds and have been widely recognised and used for instruction. In this book Professor Watt introduces the history of the creeds and takes the student through a selection of the main ones in translation. Explanatory notes and a single Shi’ite creed are also given in this useful and informative survey.