Ahmad al-Muhajir (Arabic: أحمد المهاجر, Aḥmad al-muhāǧir, Arabic pronunciation: [ɑhmɑd ɑl muhɑːdʒiɽ]; 260-345 AH or c. 873-956 CE) also known as Al-Imām Aḥmad bin ʿĪsā was an Imam Mujtahid and the progenitor of Ba 'Alawi sada group which is instrumental in spreading Islam to India, Southeast Asia and Africa. He was the son of ‘Isa the son Muhammad the son of Ali al-Uraydi who was the fourth son of Imam Ja'far al-Sadiq, a fifth generation descendant of Ali and Fatima, the daughter of Muhammad.