Siege of Mosul 1261-1262 in Jami’ al-tawarikh, by Rashid al Din Hamadani painted 1430 (as illustration only)


Abu Zakariyya al Azdi: Tarikh al Mawsil (History of Mosul) (d945)


Taken from: Manufacturing and labour by Michael G. Morony


…… there were 4,000 Zanj slaves headed by a qa'id in the army of the provincial governor of Mawsil (Mosul)

during the Caliphate of Abu Ja'far al-Mansur (754-775 A.D.).