Nizam al-Din is a Chisti saint who died in 1325.1 The Chistis were "the most popular Sufi order in India2." Sufism is a denomination of Islam that embraces a mystical practice of Islam.3 The priority of a Sufi devotee is obtaining a "direct experience of the Divine." 4 Sufism is separate from both Sunni and Shiite; a Sufi order can also be considered Sunni or Shiite.
1. S.A.A. Naqvi, Humayun's Tomb and Adjacent Buildings (Calcutta: Government of India, 1947), 15.
2. Catherine B. Asher, Architecture of Mughal India (Cambridge: Cambridge University Press, 1992), xxv.
3. Michael H. Fisher, A Short History of The Mughal Empire (New York: I.B.Tauris and Co. Ltd, 2016), 52.
4. ibid., 19.
A chilla-khana is, "a saint's house of meditation."5
5. Asher, Architecture Mughal India, xxv.
A khanqah is, "a residential center for spiritual study."6
6. Asher, Architecture Mughal India, xxvii.
Asher, Catherine B. "A Ray from the Sun: Mughal Ideology and the Visual Construction of the Divine." In The Presence of Light: Divine Radiance and Religious Experience, edited by Michael Kapstein, 161-94. Chicago: University of Chicago Press, 2004.
The Delhi Walla. "City Faith: Hazrat Nizamuddin's Chilla Central Delhi."