The dikka in front of the mihrab and minbar (see previous image). The word comes from Arabic and refers to the "tribune for the official charged with repeating daily prayers" (Blair, "Glossary").
Blair, Sheila S., and Jonathan M. Bloom. The Art and Architecture of Islam: 1250–1800. New Haven and London: Yale University Press, 1994.
Creation date unknown. Processing date unknown. Formerly cataloged as B.05.028. Notes written on the slide or index: Cairo Sultan Hassan Mosque.