1. Free Library of Philadelphia, Lewis O 169 DS ID: DS4249 Title: al-Tawḍīḥ Author: ʿUbaidallāh Ibn-Masʿūd al- Maḥbūbī, Abū al-Qāsim ibn Abī Bakr Samarqandī, and Hibat Allāh ibn Salāmah