The erudite scholar and editor Shihab al-Din Ahmad b. al-‘Imad al-Aqfahsi (d. 808) authored a versification on the topic of excusable impure substances. This versification is valuable, its benefits are many. From those who authored commentaries on it are: Shaykh Shihab al-Din Ahmad b. Khalil al-Misri al-Shafi’i al-Subki (d. 1032). He authored a commentary under the title Fath al-Mubin bi Sharh Manzumat Ibn ‘Imad al-Din. This shaykh, Ahmad b. Khalil al-Subki, took from Shams al-Din al-Ramli (d. 1004). Ramli’s father Abu al-‘Abbas Shihab al-Din Ahmad b. Hamzah al-Ramli (d. 940) also authored a very beneficial commentary on it which he completed in the year 940 under the title Fath al-Jawwad Sharh Manzumat Ibn al-‘Imad. This is the book available here, along with Shaykh Husyan b. Sulayman al-Rashidi’s (d. 1215) hashiyah under the title Bulugh al-Maram bi Fath al-Jawwad. And Shaykh Sulayman al-Jamal’s (d. 1204) Taqrirat.