Firishta's History (Gulshan-i Ibrāhīmī) 46.1.9

46.1.9

The King of Dehly, and his minister, Mulloo Yekbal Khan, seeing so few troops in the retinue of Teimoor, sallied out with 5000 horse and foot, and 97 elephants. A skirmish took place, in which the Dehly troops were repulsed; and Mahmood Seif Beg, a Dehly officer of rank, who led the attack, was taken prisoner. Teimoor ordered him to be instantly beheaded; and after having made the observations which he wished, repassed the river, and joined his army. On the next morning, he moved his position more to the eastward. On this occasion it was reported to him, that there were above 100,000 prisoners in his camp, who had been taken since he crossed the Indus; that they had on the day before expressed great joy when they saw him attacked, which rendered it extremely probable, that on a day of battle they would join their countrymen against him. Teimoor having ascertained that most of them were idolaters, gave orders to put all above the age of fifteen to the sword; so that upon that day nearly 100,000 men were massacred in cold blood.