Abu ’l-Qāsim ʿUbayd Allāh b. ʿAbd Allāh Ibn Khurradādhbih (d. c. 911 CE) is one of the earliest geographical writers in Arabic whose writings have survived more or less in their original form. The Kitāb al-Masālik wa l-mamālik (‘The book of itineraries and kingdoms’) made his reputation. In this edition, Ibn Khurradādhbih’s geographical text is published alongside an excerpt from Qudāma Ibn Jaʿfar’s Kitāb al-Kharāj, which relied on the same sources as Ibn Khurradādhbih. Qudāma b. Jaʿfar was a prominent philologist and historian who died between 940 and 948 CE.