Radif

Radif (Arabic: رديف) is a rule in Persian, Turkic, and Urdu poetry which states that, in the form of poetry known as a Ghazal, the second line of all the couplets (bayts or Shers) must end with the same word/s. This repeating of common words is the "Radif" of the Ghazal. It is proceeded by a Qaafiyaa, which is a repeating pattern of words.