Jahan. In 1622, Shah Jahan sent Raja Vikramjit who was Governor of Gujarat to subdue the Kolis of Ahmedabad. Between 1632 and 1635, four viceroys were appointed due to they could not manage the Koli activities well. Kolis of Kankrej in North Gujarat committed excesses and the Jam of Nawanagar did not paid the tribute. Soon Azam Khan was appointed who put the province in order by subduing the Kolis. Azam Khan marched against Koli rebels, When Ázam Khán reached Sidhpur, the merchants complained bitterly of the outrages of one Kánji, a Chunvalia Koli, who had been especially daring in plundering merchandise and committing highway robberies. Ázam Khán, anxious to start with a show of vigour, before proceeding to Áhmedábád, marched against Kánji, who fled to the village of Bhádar near Kheralu, sixty miles north-east of Áhmedábád. Ázam Khán pursued him so hotly that Kánji surrendered, handed over his plunder, and gave security not only that he would not again commit robberies, but that he would pay an annual tribute of Rupees 10,000. Ázam Khán then built two fortified posts in the Koli country, naming one Ázamábád after himself, and the other Khalílábád after his son and He also made the Jam of Nawanagar surrender. The next viceroy Ísa Tarkhán carried out financial reforms. In 1644, the Mughal prince Aurangzeb was appointed as the viceroy who was engaged in religious disputes for destroying a Jain temple in Ahmedabad. Due to his disputes, he was replaced by Shaista Khan who failed to subdue Kolis. So the prince Murad Bakhsh was appointed as the viceroy in 1654. He restored the disorder soon and defeated the Koli rebels. Illness and death When Shah Jahan became ill in 1658, Dara Shikoh (Mumtaz Mahal's eldest son) assumed the role of regent in his father's stead, which swiftly incurred the animosity of his brothers. Upon learning of his assumption of the regency, his younger brothers, Shuja, Viceroy of Bengal, and Murad Baksh, Viceroy of Gujarat, declared their independence and marched upon Agra in order to claim their riches. Aurangzeb, the third son, gathered a well-trained army and became its chief commander. He faced Dara's army near Agra and defeated him during the Battle of Samugarh. Although Shah Jahan fully recovered from his illness, Aurangzeb declared him incompetent to rule and put him under house arrest in Agra Fort. Jahanara Begum Sahib, Mumtaz Mahal's eldest surviving daughter,