Qutb-ud-din Aibak ruled for four years until he had a fatal accident while playing chaugan(polo). His horse fell and he was impaled on the pommel of his saddle. His early death prevented him completing his plans for organizing his kingdom and establishing a sound administration.
Shams-ud-din Iltutmish (Hindi: अलतामश/AlTaMash/Iltutmish)(Persian شمس الدین التتمش) (r. 1211–1236) was the third ruler of the Mamluk dynasty of Delhi of Turkic origin.[1] He was a slave of Qutb-ud-din Aibak and later became his son-in-law and close lieutenant. He was the Governor of Badaun when he deposed Qutub-ud-din's successor Aram Shah and acceeded to the throne of the Delhi Sultanate in 1211. He shifted Capital from Lahore to Delhi, remained the ruler until his death on May 1, 1236. Iltutmish introduced the silver tanka and the copper jital-the two basic coins of the Sultanate period, with a standard weight of 175 grains. He introudced Iqtadari system: division of empire into Iqtas, which were assigned to the nobles and officers in lieu of salary.
He built the Hauz-i-Shamsi reservoir in Mehrauli In 1236 Iltumish died, and buried with the Qutb complex in Mehrauli.
Southern Bihar was captured by Iltutmish in 1225-26. Lakhnauti was captured in 1226. Revolts continued until the Khalji Maliks of Bengal were reduced to complete submission in the winter of 1231.[5] Ala-ud-din Jani was appointed Governor of Lakhnauti On his accession, Iltutmish faced a number of challenges to his