Was the disciple of Shaykh Badru'ddín Firdausí of Samarḳand, who was the khalífah or vicegerent of Shaykh Sayfu'ddín Bákharzí,* who held the same relation to Shaykh Najmu'ddín Kubra. From thence he came to Delhi and for a time directed the consciences of men, and there died. Some say that he and Shaykh I'mádu'ddín Ṭúsí were the disciples and vicegerents of Shaykh Ruknu'ddín Fírdausí.