After Fayyaz Lahiji, his son, Mirza Hasan Lahijy, and his student Qazi Saeed Qummi took the field of kalam forward with expanding discussions and publications on it. During this period more schools were established such as Fayziyeh, Shadghuli, Dar ush-Shifa, Muminyah, and Sarutghi 52 .
Ni miongoni mwa wale walio mashuhuri katika sunan, naye ameandika katika risala yake Munaqib wa ahwaal Aimma at-haar kuwa: Na mwana wa Hasan al-Askary a.s. aliyeitwa Muhammad al-Mahdi a.s. alikuwa akijulikana na Sahaba makhsusi na kundi lililokuwa likiaminika tu.