Sultan Al-Malik Al-Nasir, also known as Al-Nasir Salah ad-Din, was a prominent ruler of the Ayyubid dynasty in the 12th century. He is best known for his leadership during the Crusades, particularly for his role in the Battle of Hattin in 1187, where he achieved a significant victory against the Crusader states. His efforts helped to recapture Jerusalem from the Crusaders, solidifying his reputation as a key figure in Islamic history. Al-Nasir was not only a military leader but also a patron of culture and architecture. He commissioned various building projects, including mosques and schools, which contributed to the cultural development of the Islamic world. His reign is often remembered for its emphasis on unity among Muslim factions and the promotion of Islamic scholarship.