Abstract

Post-classical period witnessed intense debates on aspects of the Avicennan theory of science. Among them one set of discussions concerned the issue of subject matter (mabāhith al-mawdūʿ) in a science. They were raised by Ṣadr al-Sharīʿa (d. 747/1346) in the introduction of his al-Tawḍīh, a commentary on his legal theory text al-Tanqīḥ. Therein, he raised three questions: (1) whether the subject matter of a science can be multiple, (2) what restricting subject matter of a science means, and (3) whether one thing can be the subject matter of multiple sciences. Taftāzānī (d. 792/1390), a proponent of the Avicennan theory, objected to Ṣadr al-Sharīʿa’s positions in his al-Talwīḥ, the most well-known supercommentary on al-Tawḍīh. The paper analyzes this debate on the issue of subject matter in sciences, and thus sheds light on the reception of an important aspect of the Avicennan theory of science in the postclassical period.