Firishta's History (Gulshan-i Ibrāhīmī) 6.3.7

6.3.7

In the year 402, Mahmood resolved on the conquest of Tahnesur, in the kingdom of Hindoostan. It had reached the ears of the King that Tahnesur was held in the same veneration by idolaters, as Mecca by the faithful ; that they had there set up a number of idols, the principal of which they called Jugsoom, pretending that it had existed ever since the creation. Mahmood having reached Punjab, required, according to the subsisting treaty with Anundpal, that his army should not be molested on its march through his country. An embassy was accordingly sent to inform the Raja of his intentions, and desiring him to send safe-guards into his towns and villages, which he would take care should be protected from the followers of his camp.