Firishta's History (Gulshan-i Ibrāhīmī) 6.2.6

6.2.6

Mahmood having besieged Mooltan for seven days made these terms, and was preparing to return to Ghizny, when news was brought from Arslan Jazib, governor of Hirat, that Elik Khan, the king of Kashgar, had invaded his territory. He instantly repaired to Ghizny, having placed the management of the affairs of Hindoostan in the hands of Sewukpal, a Hindoo prince, who had formerly been made prisoner by Aboo-Ally-Sunjury, in Pishawur, and had become a convert to Mahomedism. The particulars of the war with Elik Khan are these. We have already mentioned that a close alliance had been formed between Elik Khan and Mahmood, to the latter of whom the former had given his daughter in marriage. But factious persons about the two courts, by misrepresentations, had changed their former friendship into enmity. When Mahmood marched to Hindoostan, he left Khorassan almost destitute of troops, and Elik Khan, taking advantage of the circumstance, resolved to seize that province for himself. To accomplish his design, he ordered his chief general, Sipustugeen, to invade Khorassan, and directed Jakurtugeen to invade Bulkh. Arslan Jazib, the governor of Hirat, informed of these movements, hastened to Ghizny to secure the capital; and the chiefs of Khorassan finding themselves deserted, and being in no condition to oppose the enemy, submitted to Elik Khan.