Taj Mausoleum, Iwan on south, back wall, detail: The pishtaq is accentuated by a large inscription in sulus script in a band on its rectangular frame. The texts are selected passages from the Quran which relate to the eschatological programme of the building. The spandrels are filled with flowery arabesques in red, green and dark yellow in inlay. Flowers cover the dados of the three walls of the iwan and have symmetrical composition and minute botanical details. Shah Jahan’s artists composed flowers of their own convention.