Evliya Çelebi,
Narrative of Travels in Europe…
“ This mosque is always illuminated by flashes of light; and before the window of the mihráb there is a garden like that of Irem, adorned with various fruits and flowers, where, beneath a monument of white marble, covered with lead, rest the remains of its founder. Round the inner and outer courts of this mosque there are shops of all kinds of trades, with a public kitchen, a refectory, and hostel for travellers; a school for instructing the poor and rich in the Korán; and a college for lectures on the art of reciting it. ”
