Taj al-maʾathir 12: Kutbu-d din advances to Kol.

12

After staying sometime at Dehli, he marched in the year 590 H. (1194 A.D.), towards Kol and Benares, passing the Jiin (Jumna) "which, from its exceeding purity, resembled a mirror." He took Kol, "which is one of the most celebrated fortresses of Hind." Those of the garrison "who were wise and acute were converted to Islam," but those who stood by their ancient faith were slain with the sword. "The nobles and chiefs of the State entered the fort, and carried off much treasure and countless plunder, including one thousand horses."
There intelligence was received of the march of Muhammad Ghori from Ghazna; Kutbu-d din advanced to meet him, "and had the honor of kissing hands, which is the highest of glories, and the essence of miracles, and presented an elephant laden with white silver and red gold," "and an hundred horses," "and sundry kinds of perfumes."