Soap in Islamic Medieval Islamic History

Soap in Islamic Medieval times 
Where it came from and how it’s obtained 
what quantities was it shipped and sold in
What was it used for 
Must use Cairo Genizah as primary source
Must use one of Goiteins works or Encyclopedia of Islam 
Must use one non-Internet source 
Must cite throughout using footnotes and Chicago Manual of Style
Footnotes must include page numbers
Must include bibliography page 
Must include intro with a clear thesis 
Must have a Conclusion 
Times New Roman, 11-12 Font, Margins should be 1 inch on all sides.