Sheikh Mufid was born on 11th Dhul Qa'dah, 336 Hijra (or 338 A.H. according to Sheikh Tusi) in Ukbara near Baghdad. He grew up under the care of his father who taught him the fundamentals of Arabic literature. Thereafter, accompanied by his father, he came to Baghdad and studied under the tutelage of al-Husain b. Ali al-Basri al-Mu'tazali, popularly known as Al-JUAL, and Abu Yasir, the slave of Abul Jaish. In the ensuing year he qualified as an Alim of keen insight, a jurist of high repute and a formidable logician. In spite of being in the prime of his life, he enjoyed supremacy over most of