This research paper examines social, economic and political details of the lives of slaves at Moroccan palaces in the Tafilalet-Sijilmassa region, relying on the Sultan's correspondence and other contemporary sources, as well as accounts by foreign travellers who visited the region during the th and th centuries. Any study of this subject will inevitably come up against the paucity of source materials on the situation of palace slaves. However, a scattering of references may be found in narratives of certain military events and in chronicles and biographies of the Sultans. The researcher may also extract rare snippets of information from royal correspondence on certain administrative matters. This data may be read in parallel with religious rulings, popular proverbs and oral histories found in other contexts, giving them added meaning and relevance. Yet the subject also remains opaque due to the authorities' perceptions of slaves' inferiority and efforts to conceal their affairs from the public eye, considering them a private matter of the palace.