Constituents of the Heart by Imam al-Tirmidhi

This is a translation of the first chapter of the Persian jurist al-Ḥakīm al-Tirmidhī’s Bayān al-Farq bayna al-Ṣadr wa-l-Qalb wa-l-Fuʾād wa-l-Lubb. Abū ʿAbd-Allāh Muḥammad bin ʿAlī al-Tirmidhī said, “Some of the people of knowledge have asked me about the differences between the terms ṣadr, qalb, fuʾād, and lubb, and what has been narrated regarding them. […]