His status as a Marja' of his time kept him extremely busy...
His status as a Marja' of his time kept him extremely busy, yet he found time to conduct his teaching sessions, from which emerged great Ulama like Seyyid Murtadha (Alamul Huda), Syed al-Radhi (the compiler of Nahjul Balaghah ), Sheikh Tusi (who laid the foundation of Hawza of Najaf), al-Najashi and others. Questions poured in from far and wide, and Sheikh answered them all. In fact, he was the defender of Imamiyya Sect, adequately aware of the needs of the Islamic world.
To his credit stand several great works written in various Islamic sciences. Ibn Abil Hadeed al-Mo'tazaly in his commentary on Nahjul Balaghah writes that once Sheikh Mufid saw Fatima al-Zahra, peace be upon her, in his dream. She was accompanied by her two young sons, al-Hasan and al-Husain, peace be upon them.
Addressing him, she said: "O my Sheikh, teach Fiqh (Jurisprudence) to these two boys of mine." Next day, Fatimah, the mother of Seyyid Murtadha and Syed al-Radhi came to Sheikh, holding hands of her two young sons, and uttered the same words which Fatimah al-Zahra, peace be upon her, had uttered in his dream. Tributes by Al-Dhahabi, the renowned Sunni scholar, paid tribute to al-Mufid in his Siyaru A'alaam al-Nabalaa (Vol 17 p.
Ibn Abi Tayy has mentioned him in the History of the Imamiyya at length, saying: "He towered high above his contemporaries in all branches of knowledge, excelling in the principles of Fiqh, Fiqh, the traditions, the science of al-Rijal, (discerning the veracity of the narrators of the traditions), exegesis of al-Quran, Arabic grammer and poetry. He entered into debate with men from all faiths and persuasions.
The Buwaihid kingdom looked upon him with great respect, and he had won the favours of the Caliphs. Resolute, charitable and humble, he was ascetic in his habits, always engrossed in prayers and fasting, and wearing coarse clothes. Reading and learning were his main traits, and he was blessed with a very retentive memory. It is said that he had committed every work of the opponents to memory, and was thus able to answer all their doubts and disputes.
Always keen to learn more, frequenting book stores.