Khwaja Mas'ud bin Sa'd bin Salman:Diwan-i-Salman in Elliot and Dowson, History of India as told by its own Historians, Vol. IV, pp. 518 ff.
Famous Ibrahim of Ghazna Quotes
Malwa (Madhya Pradesh) . Khwaja Mas'ud bin Sa'd bin Salman:Diwan-i-Salman in Elliot and Dowson, History of India as told by its own Historians, Vol. IV, pp. 518 ff.
Jalandhar (Punjab). Khwaja Mas'ud bin Sa'd bin Salman:Diwan-i-Salman in Elliot and Dowson, History of India as told by its own Historians, Vol. IV, pp. 518 ff.
Lal, K. S. (1994). Muslim slave system in medieval India. New Delhi: Aditya Prakashan. Chapter 3 quoting Maulana Ahmad, Tarikh-i-Alfi, E.D., V, 163; Farishtah, I, 49.