Sayyid

Sayyid (, or, Arabic: سيد‎; meaning Mister) (plural Sadah Arabic: سادة‎, Sādah) is an honorific title, it denotes males accepted as descendants of the Islamic prophet Muhammad, who is the decendant of Ishmael and Abraham- through his grandsons, Hasan ibn Ali and Husain ibn Ali, sons of the prophet's daughter Fatima Zahra and his son-in-law Ali ibn Abi Talib.