The Cambridge History of India, Vol. III: Turks and Afghans v3.c20.133

v3.c20.133

The new king, who is usually, but incorrectly, styled Altamsh by European historians, was a Turk of the Ilbarī tribe who, though of noble birth, had, like Joseph, been sold into slavery by his brothers. When he and another slave named Aibak Tamghāj were first carried to Ghaznī Muhammad would not pay the price demanded for them, but afterwards permitted Qutb-ud-dīn Aibak to purchase them at Delhi. Tamghāj was slain when Yildiz drove Qutb-ud-dīn Aibak from Ghaznī, but Iltutmish advanced rapidly in his master's favour and held in succession the fiefs of Gwalior, captured in 1196, Baran (Bulandshahr) and Budaun.