Firishta's History (Gulshan-i Ibrāhīmī) 57.3.4

57.3.4

To add to Hoomayoon's embarrassments, which could hardly be exceeded, his other brother, Kamran Mirza, instead of aiding him at this crisis, aspired to the throne, and marched with ten thousand horse from Lahore, giving out, that he came to offer assistance. On the arrival of Kamran at Dehly, Hindal Mirza prevailed on him to unite their forces in prosecution of the siege. Fukhr-ood-Deen Ally, who commanded in Dehly, informed Kamran that he would never betray his trust, but was determined to hold out to the last drop of his blood, as long as Hoomayoon reigned; but that if Kamran should, in the first place, render himself master of Agra, and succeed in subduing his brother Hoomayoon, he would then, and not till then, give up the city of Dehly. The Princes, finding the governor so resolute, raised the siege, and marched towards Agra. On reaching that city, the jealousy which the brothers naturally entertained against each other (the eyes of both being turned towards the throne) broke out into open war. Hindal Mirza, deserted by many of his party, fled to Alwur, with five thousand horse and three hundred elephants; while Kamran Mirza, entering Agra, proclaimed himself king. Hoomayoon used every possible argument with his brothers to effect a coalition of interests against Sheer Khan; telling them, that their intestine feuds must end in their losing that mighty empire which had cost their father so much pains to acquire;