The Portfolio Councilors are the heights ranking offices of the Council Court, in the Caliphate holding a special imperial responsibility of the Sultanate Council administration affairs. As the Empire rested largely in the hands of portfolio court, Sultan Muhammad Bello introduced the kofa systems administration of the Caliphate, so as to monitor the affairs of the flag bearers  and to exposed the danger on the surface of the borders, the Councillor assigned special responsibility for imperial affairs of the Emirates of Kano, Adamawa, Gombe and Zaria is Waziri, Hadeija, Katagum, Misau, Jama’are and Bauchi fell to the Magajin Rafi, Katsina, Daura, and Kazaure to the Galadima while Kwanni, Agdeez, Thawa and Dosoh present Niger Republic to Sarkin  Yakin Binji, Where Sarkin Kabbin Yabo already at  the frontiers of Kabawa and some part of Zamfara borders while Sa’in Kilgori  being a member of the council court with his title as Sa’i he was entitled to collect tribute from its vassals. This was Zakat levied at the Islamic rate of one-fifth and fell equally on revenue collected in peace and booty taken in war. As the yield from booty was very volatile, the amounts remitted tended to vary from Emirate to Emirate and from year to year.