Rashid ad-Din Sinan

Dāʿī
Rashid ad-Din Sinan
راشد الدين سنان
Lord of Al-Kahf and Masyaf
In office
1162–1193
Preceded byAbu Muhammad
Succeeded byAbu Mansur ibn Muhammad or Nasr al-'Ajami
Personal life
Born
Abu al-Hasan Sinan ibn Sulayman ibn Muhammad

1131 or 1135
Basra, Seljuk Empire (now Iraq)
Died1193 (age 58 or 61)
Resting placeSalamiyah, Syria
EducationMadrasa of Hasan ibn Muhammad ibn Ali, Alamut
Known forConflict with Saladin and the Crusader states
Other namesOld Man of the Mountain
Religious life
ReligionShia Islam
OrderAssassins
SectNizari Isma'ilism

Rashid al-Din Sinan (Arabic: راشد الدين سنان Rāshid ad-Dīn Sinān; 1131/1135 – 1193) also known as the Old Man of the Mountain (Arabic: شيخ الجبل Sheikh al-Jabal; Latin: Vetulus de Montanis), was an Arab Muslim missionary (dāʿī) who served as the leader of the Nizari Ismaili state and the Order of Assassins from 1162 until his death in 1193. An adherent of Nizari Ismailism, a branch of Shia Islam, he was a prominent figure during the Crusades.