The Islamic [manuscript] in Beirut, in the year one thousand four hundred and seventeen AH, within three treatises on the science of hadith terminology, along with the two treatises on the conditions of the six imams by Ibn Tahir al-Maqdisi, and the conditions of the five imams by Abu Bakr al-Hazimi.

This treatise is transmitted through the narration of Abu Bakr Muhammad ibn Abd al-Aziz ibn al-Fadl al-Hashimi, from Imam Abu Dawud.

14 - Al-Hafiz Ibn Hajar al-Asqalani mentioned in the introduction to his book "Tahdhib al-Tahdhib" three other books by Imam Abu Dawud, namely: "Al-Du'a" (The Supplication), "Ibtida' al-Wahy" (The Beginning of Revelation), and "Akhbar al-Khawarij" (Reports on the Kharijites). He also mentioned in the introduction to "Taqrib al-Tahdhib" two other books: "Fada'il al-Ansar" (Virtues of the Helpers) and "Musnad Malik" (The Musnad of Malik), which al-Hafiz al-Mizzi had mentioned before him in the introduction to "Tahdhib al-Kamal" (1).

Dr. Fuad Sezgin mentioned that there are issues upon which Imam Ahmad took oaths, transmitted from Abu Dawud's narration of him, extant in the Zahiriyya [library] in Damascus, under number (334), in one hundred folios (2). We say: this is the very same work as Abu Dawud's "Masa'il" (Issues) previously mentioned under number (5), and we do not know whence he derived this name for this book, for its name was previously "Masa'il al-Imam Ahmad" (Issues of Imam Ahmad), as indicated by Shaykh Muhammad Bahjat al-Bitar and Shaykh Muhammad Rashid Rida, may God have mercy on them both.

However, there is another book by Abu al-Husayn Ibn Abi Ya'la al-Farra' called "Al-Masa'il allati Halafa 'alayha Ahmad" (The Issues upon Which Ahmad Took Oaths), which is also extant in the Zahiriyya library, and thus Dr. Sezgin was confused by this.

--------------------------------------------
(1) "Tahdhib al-Kamal" 1/150, and "Tahdhib al-Tahdhib" 1/10.
(2) "Tarikh al-Turath al-Arabi" 1/295.