A salsabil (or salasabil[1]), also known as a shadirwan,[2] is a type of fountain which maximizes the surface area of the water.
[4][3] Its use extends from southern Spain through north Africa and the Middle East to northern India.
[8][9]: 459 The water flows in a manner designed to maximize the surface area, and thus evaporation.
A salsabil may be a near-vertical marble waterfall mounted on a wall,[4] or the sheet of water may flow down a slanted chute.
[11]: 63, 262 Salsabils, in the form of inclined marble slabs over which drinking water flowed before being dispensed, were often included inside the sabils of Mamluk architecture.