Abstract
This book, which has been prepared on one of the Arab tribes al-Azd, and consists of an introduction and five chapters, is based on Brian Ulrich's dissertation (2008) at the University of Wisconsin. The main argument is that "al-Azd" identity existed from pre-Islamic times into the Abbasid period. However, the meaning of that identity had been changed in various periods and places. In his study, the author tried to understand the events in a certain period of Islamic history through the Ezd tribe and discussed the political and social aspects of the Ezd tribe in these events. The method that should be considered as the most original side of the study, is the tribe has been regarded as a form of identity. The conclusion he reached with this method is, there had been a more effective continuity between the tribal identity and social structure in Arab society. In this review, the author's plan, the sources, the limits of the study will be discussed.