Firishta's History (Gulshan-i Ibrāhīmī) 56.1.4

56.1.4

for a raging pestilence suddenly broke out among the enemy's cavalry, so that their horses died off in great numbers daily, which compelled Sooltan Ahmud Mirza to raise the siege, and to leave the conduct of the negotiation (which was again opened) in the hands of Ameer Dervish Mahomed; who, in concert with Hussun Yakoot, on the part of Babur, had several conferences, and concluded a peace, which was never ratified, Sooltan Ahmud Mirza having died on his march to Samarkand. Sooltan Mahmood Khan, the son of Yoonoos Khan, the maternal uncle of Babur, had now reached Akhsy, on his route to Furghana, where Jehangeer Mirza, a younger brother of Babur, to whom the defence of that place was intrusted, conceiving himself unable to cope with the enemy, fled, accompanied by Dervish Ally, Mirza Koolly Gokultash, Mahomed Bakur, Sheikh Abdoolla Sheebuk, Aka Veis, and Meer Gheias-ood-Deen Toghay, towards Kasan, the birth-place of Aka Veis, where Nasir Mirza, the youngest brother of Babur, now resided; but Sooltan Mahmood Khan pursuing them thither, that place was given up without resistance ; after which, proceeding towards Akhsy, and finding he could not succeed in his Enterprise, Sooltan Mahmood Khan retired to his own country.