The hilyeh is a description of the Prophet Muhammad, rendered in calligraphic format. Credit for the layout of the classic hileyh goes to the famous Ottoman calligrapher, Hafiz Othman. The layout is usually with the bismallah above, followed by the description and with the names of the four Rightly Guided Caliphs in roundels. It was often an examination piece for budding calligraphers, submitted by the pupil to master (Nabil Safwat, The Art of the Pen, Oxford, 1996, pp. 46-49).