L'imamat et l'occultation selon l'imamisme

"In his work, L'imamat et l'Occultation selon l'imamisme, étude bibliographique et histoire des textes, Hassan Ansari has attempted to reconstruct a number of doctrines related to the concepts of religious authority (imāma) as well as occultation (ghayba) in Twelver Shi'i Islam (Ithnā'ashariyya). This has been done through identifying and collecting numerous references to quotations of early works in later Shiʻi texts. Ansari has reconstructed earlier layers of primary materials that are entirely lost and only pre-served in later sources. This book through an in-depth analysis of the available sources enables scholars to analyze the earliest stages of the evolution of both of the above-mentioned concepts. The book's Appendix comprises fragments of early works of Hadith reconstructed from later sources"--Back cover.