On the definition of the borders between the jurisdictions of Musāʿid Qīdūm and ʿUthmān Diqna.
- This text has been edited in Muḥammad Ibrāhīm Abū Salīm, Muḥarrarāt ʿUthmān Diqna, Khartoum, Markaz Abū Salīm li-l-dirāsāt, 2004. See letter 270
15/08/1309