Muhammad's family). The Abbasid caliphs again took it away from the ahl al-bayt and used it as their property, till Abbasid caliph al-Ma'mun again conducted a thorough inquiry by a special court of jurists before which a follower of the ahl al-bayt advocated their case and the state attorney opposed his arguments.
The Abbasid caliphs once more seized it from the ahl al-bayt and made it their possession, until Abbasid caliph al-Ma'mun conducted another comprehensive investigation through a special court of jurists. A follower of the ahl al-bayt argued on behalf of his case, while the state attorney opposed his arguments.