G. H. Yazdani, ‘The Inscription on the Tomb of ‘Abdullah Shāh Changāl at Dhār’ Epigraphica Indo-Moslemica (1909-10): 1-5; now translated and reinterpreted in Golzadeh, Razieh B. (2012). "On Becoming Muslim in the City of Swords: Bhoja and Shaykh Changāl at Dhār". Journal of the Royal Asiatic Society22 (1): 115–27. doi:10.1017/S1356186311000885.
The point made in Golzadeh, Razieh B. (2012). "On Becoming Muslim in the City of Swords: Bhoja and Shaykh Changāl at Dhār". Journal of the Royal Asiatic Society22 (1): 115–27. doi:10.1017/s1356186311000885.