Prince Muhammad, who was trained as the successor of Balban, was killed in one of the battles against Mongols during his fathers' lifetime. This created a vacuum for a good successor and it was not possible for the incompetent rulers who followed Balban, to meet the administrative standards set by their predecessor. Balban was succeeded by his seventeen years old grandson, Kaiqubad. Kaiqubad started spending his wealth on pursuits of pleasure. The practical affairs of the government went into the hands of Malik Nizam-ud-din. Nizam-ud-din murdered all the nobles and princes who were against him. Later on, differences arose between Kaiqubad and Nizam-ud-din and Kaiqubad killed Nizam-ud-din. Kaiqubad suffered a stroke and was paralyzed. His nobles replaced him by his three years old son Kaimurs. On June 13, 1290, Firuz, a Khalji Malik and the Ariz-i-Mumalik appointed by Kaiqubad, took over the throne from the infant Sultan and declared his independence with the title of Jalal-ud-din Khalji. With this the rule of the Slave Dynasty came to an end.

Qutb-ud-din Aibak laid the foundations of the Qutb Minar
The most important institution that developed under the Slave Dynasty was the institution of Chalgan or the Forty. Chalgan were a corps of highly placed and powerful officers, whom Iltutmush had organized as his personal supporters. They were like the cabinet for the Sultan. However, during the days of civil war between the successors of Iltutmush, the Chalgan started looking for their personal gains and played one prince against the other. During this era they became very strong. Each one of them started considering himself as the deputy of the Sultan. When Balban assumed charge as Sultan, he murdered some of them while others were banished from the kingdom. There is no doubt that by crushing their power, Balban strengthened his rule, but actually he destroyed the real power of the slave dynasty.