Qutb al-Din Aibak (1150–1210) Turkic peoples king of Northwest India
Quoted from Lal, K. S. (1999). Theory and practice of Muslim state in India. New Delhi: Aditya Prakashan. Chapter 5 (quoting Gordon Sanderson, 'Archaeology at the Qutb', Archaeological Survey of India Report, 1912-13; Ibn Battutah)