Lot Essay
Placed either on walls, pendentives or hung from columns where they were easily visible, calligraphic roundels, such as the present, bearing the names of God, Muhammad, the Rightly Guided Caliphs, as well as Hassan and Husayn adorn a number of Ottoman mosques. The names of God and the Prophet Muhammad were usually placed to the right and left of the mihrab respectively and the caliphs in chronological sequence thereafter, with the earliest positioned closest to the mihrab (Stephen Vernoit, Occidentalism, Oxford, 1997, no. 1, p.17). To the left of the word 'Allah here is the phrase jalla jalaluhu ('May his Glory be exalted').