تحفة النظار في غرايب الامصار وعجايب الاسفار 13.70.3

13.70.3

In it is the great tank (bāʾin), five hundred paces long and three hundred paces wide, lined with dressed red stone. Along its sides are twenty-eight stone domes, in each of which are four stone seats, and each dome is reached by stone steps. In its middle is a large dome of three storeys, with four seats in each storey.