(Arabic) Descendant of Muhammad through Fatima; honorific title accorded to any Muslim ruler

a descendant of Muhammad's grandson Hasan, and a sayyid a descendant of another grandson, Hussein, although the two terms are often used interchangeably

hereditary nobleman of the meaning of the title. A title maintained by the masculine members of the dynasty of Hashimite, descended in the masculine line of Hassan, a older twin son of Ali, the fourth Caliph of its wife Fatima, daughter of the prophet.

Sharīf (Arabic: شريف) is a traditional Arab tribal title given to those who serve as the protector of the tribe and all tribal assets, such as property, wells, and land.