Aruz
The ʿarūż, also called ʿarūż prosody, is the Persian, Turkic and Urdu prosody, using the ʿarūż meters. The earliest founder of this versification system was Khalil ibn Ahmad. There were 16 meters of ʿarūż at first. Later Persian scholars added 3 more. For example, the Karakhanid long poem Kutadgu Bilig from the 11th century was written using the mutaqārib meter.