The translator of this text is Professor Majid Khadduri. Professor Khadduri has done an admirable service in making this valuable work available in English. His excellent translation uses not only the original manuscripts of Ibn Jama'a and al-Rabi, found at Dar al-Kutub, the National Library in Cairo, but also authoritative editions published earlier in this century, namely the Bulaq and Shakir editions. In his introduction, Professor Khadduri outlines the historical background of the 'Risala' and gives a biography of al-Imam al-Shafi'i as well as annotated, detailed summaries of the composition, structure, substance and argument of the text. He also includes a list of transmitters of traditions, a glossary of the most important Islamic legal terms and a select bibliography. For this new edition, the index has been expanded and a small corrigenda added.