A free-lance adventurer, Muhammad Bakhtyar Khalji, was moving further east. In 1200 AD he sacked the undefended university town of Odantpuri in Bihar… - Muhammad bin Bakhtiyar Khalji

In the lofty nine-storied temple at Buddha Gaya, which was formerly called the Mahagandhola (Gandhalaya), the images of the past Buddhas were enshrined. The nine-storied temple called Ratandadhi of Dharamganja (university) of Nalanda was the repository of the sacred books of the Mahayana and Hinayana Buddhist Schools. The temple of Odantapuriihara, which is said to have been loftier than either of the two (Buddha Gaya and Nalanda) contained a vast collection of Buddhist and Bratiminical works, which, after the manner of the great Alexandrian Library, was burnt under the orders of Mohamed Ben Sam, general of Bakhtyar Kihilji, in 1212. A.D.

In the vicinity of this place was perceived a temple, very lofty and strong, and of beautiful structure. In it there were numerous idols of gold and silver, and one very large golden idol, which exceeded two or three thousand miskals in weight. Muhammad Bakhtiyar and the remnant of his army sought refuge in that temple, and set about procuring wood and ropes for constructing rafts to cross the stream. The Rai of Kamrup was informed of the distress and weakness of the Muhammadans, and he issued orders to all the Hindus of his territory to come up, levy after levy, and all around the temple they were to stick their bamboo spears in the ground and to plait them together so as to form a kind of wall. Then the soldiers of Islam saw this they told Muhammad Bakhtiyar that if they remained passive they would all be taken in the trap of the infidels and be made prisoners; some way of escape must be sought out. By common consent they made a simultaneous sally, and directing their efforts to one spot, they cleared for themselves a way through the dangerous obstacle to the open ground. The Hindus pursued them to the banks of the river and halted there. Every one exerted his ingenuity to devise some means of passing over the river. One of the soldiers urged his horse into the water, and it was found fordable to the distance of a bow-shot. A cry arose in the army that a fordable passage was found, and all threw themselves into the stream. The Hindus in their rear took possession of the banks. When the Muhammadans reached the middle of the stream, the water was found to be very deep, and they nearly all perished. Muhammad Bakhtiyar with some horse, to the number of about a hundred, more or less, crossed the river with the greatest difficulty, but all the rest were drowned….

The fame of his bravery and news of his plundering raids spread abroad, attracting to his standard a body of Khalji warriors then found hanging about all over Hindustan. His exploits were reported to Qutbuddin Aibak, who sent him a robe of honour and appointed him to invade Bihar as the Sultan’s general in 1202 C.E.15 Ikhtiyaruddin Bakhtiyar Khalji conquered extensively in Bihar and Bengal but then died unhonoured and unsung.