Letter from Faḍīl Ḥamdān to the delegates (umanāʾ) (al-Ṭāhir al-Majdhūb and al-Shafīʿ Aḥmad) and the deputy of the ʿāmil al-ʿumūm al-Majdhūb Abū Bakr Yūsuf
Letter from al-Ṭāhir al-Majdhūb, al-Shafīʿ Aḥmad, and al-Majdhūb Abū Bakr Yūsuf to the Khalīfa