Yahya of Daylam Yahya, the Hasan prince of Daylam and brother of Ibrahim was known as the Salim of Bakhamra. He extended his kingdom to the Caspian sea and patronized men of letters. His growth of power became an eye sore for the Abbasid Caliph who deputed Fazal, the Barmakid, Governor of Jurjan and Persia to crush him. The Barmakids were known for their sympathy with the Alids and on Tazal’s overtures Yahya agreed to submit to the caliph and was received with princely distinction and given rich gifts. A convenient
on honourable terms was signed which however, was later torn up and Yahya was treacherously put into prison.