Taysīr al-wuṣūl ilá Jāmiʻ al-uṣūl min ḥadīth al-Rasūl

[A collection of traditions alphabetically arranged, being an abridgment by ʿAbd al-Raḥmān ibn al-Daybaʿ of a work by Ibn al-Athīr entitled Jāmiʿ al-uṣūl.].