Born in Tus in 1058, died in Tus in 1111. Studied at Nizâmiye Madrasah in Baghdad under Cüveynî. Left Baghdad in 1095, returned to Nishapur in 1106. Built madrasah near his house in Tus
Born in 1058 in Iran, studied under Imam Abu Nasr Ismaeli. Became chief canonist of Nizam-ul-Mulk Tusi until his death in 1091. Experienced spiritual awakening after Tusi's murder and Malik Shah's death