Political Situation of Bost in Saffarid Era

Bost played a crucial role in establishment and stability of Saffarid dynasty. At the end of Tahirid era, Bost had a chaotic situation and different groups tried to take control of the city. Yaqub Leith,one of the Ayyaran, came over his opponents and took bay’ah (Oath of allegiance) from people. Then he suppressed his opponents among his former friends and Kharijites and took actions outside of Sistan. At first he overthrown Tahirid dynasty,afterward he attacked Bagdad, the capital of Abbasids. After the death of Yaqub Leith,vaulting ambitions of Saffarid dynasty declined. In Saffarid era, Bost was considered a vital city in which most of the major decisions, such as choosing Saffarid governors, were made. At the end of Saffarid era, Samanid dynasty took control of Bost. Khalaf ibn Ahmad Saffari’s attempts failed in regaining the control over Bost. Eventually this city was conquered by Ghaznavids.