On 6 September 1657, the illness of emperor Shah Jahan triggered a desperate struggle for power among the four Mughal princes, though realistically only Dara Shikoh and Aurangzeb had a chance of emerging victorious.[28] Shah Shuja was the first to make his move, declaring himself Mughal Emperor in Bengal and marched towards Agra from the east. Murad Baksh allied himself with Aurangzeb.