Naqib al-ashraf
Naqib al-Ashraf (Arabic: نقيب الأشراف) (plural: nuqaba or niqabat) was a governmental post in various Muslim empires denoting the head or supervisor of the descendants of the Islamic prophet Muhammad. The descendants of Muhammad were known as ashraf and throughout Islamic history, the ashraf organized themselves into large groups, akin to corporations, throughout the various Muslim territories.