Ali-Shir Nava'i
In Western literature, the oldest quinary structure with great influence is the Torah or Pentateuch; in the Far East, it is the Five Classics. The most famous pentalogy in medieval literature is Nizami Ganjavi's "Panj Ganj", or "Khamsa" ("Five Treasures"), a collection of five epics which was composed in the latter half of the 12th century. They were "Makhzan al-Asrar", "Khusraw o Shirin", "Layli o Majnun", "Eskandar-nameh", and "Haft Paykar". The idea was widely imitated, the number five being seen as having mystical significance; for example, the 16th-century poet Faizi, the poet laureate of Akbar's court, attempted a work on the same scale, but completed only three of the intended five parts. Other famous examples include Amir Khusro: "Khamsa-e-Nizami" (13th century), a pentalogy of classical romances, and Ali-Shir Nava'i: "Khamsa" (16th century).