Al-Nasir Muhammad
Al-Nasir Muhammad Salah al-Din or al-Nasir li Din Allah Muhammad Salah al-Din ibn Ali al-Mahdi (Arabic: الناصر لدين الله محمد صلاح الدين بن علي المهدي ) (b. September 4, 1338 - d. November 2, 1391) was an imam of Yemen who ruled during the period 1372-1391. He was a Zaydi imam and a descendant of the Islamic prophet Muhammad.