the buyids were originally from among the daylamids of daylam proper (khāṣ), but since the economic situation of this region was not much favorable, they joined various rules (ḥukūmas) such as the alavids of ṭabaristān and zāriyān (during the years 250/222 – 321/222) in their military uniform because of their military skills as a consequence of the circumstances in their geographical homeland a...
