Ma’ṣūmi, M. Ṣaghīr Ḥasan. “IJTIHĀD THROUGH FOURTEEN CENTURIES ”. Islamic Studies, Vol. 21, no. 04, Dec. 1982, pp. 39-70, http://irigs.iiu.edu.pk:64447/ojs/index.php/islamicstudies/article/view/5983.