This is the first volume of the book Uyun Akhbar Ar-Ridha, which is not only a detailed account of the Biography of our Eighth Imam Abul Hassan Ali ibni Musa AR-Ridha a.s. and a narration of the life-story of the Imam AS but it gives an insight into the erudition and holiness of the Imam AS. and the narration of His ahadith which has gone down in history as Al-Silsilatul Dhahabiyyah (The Golden Chain) that is transmitted from Imam to Imam from The Prophet SAWW. The text is divided into thirty chapters, each of which treats a certain topic related to the Imam AS. Chapter One gives a rationale of the name Ar-Ridha. The book describes Imam Ar-Ridha's appointment to Imamah by his father. It carries detailed accounts of the debates that took place on the Infallibility of prophets and the legitimacy of the immediate successorship of Imam Ali AS in which Mamoon also argued in favor of Imam Ali AS legitimate immediate succession after The Prophet SAWW. The Imam AS brilliant expose on Imamah and the difference between itrah and ummah are recorded in this book.