[Among the different coins struck in Mahmud's reign one bore the following inscription:] "The right hand of the empire, Mahmud Sultan, son of Nasir-u… - Minhaj-i-Siraj

'When Sultan Mahmud ascended the throne of sovereignty, his illustrious deeds became manifest unto all mankind within the pale of Islam when he converted so many thousands of idol temples into masjids. He led an army to Nahrwalah of Gujarat, and brought away Manat, the idol, from Somnath, and had it broken into four parts, one of which was cast before the entrance of the great Masjid at Ghaznin, the second before the gateway of the Sultan's palace, and the third and fourth were sent to Makkah and Madinah respectively.

[Minhaj Siraj writes that] “Ulugh Khan Balban’s taking of captives, and his capture of the dependents of the great Ranas cannot be recounted”. ... “All the infidels’ wives, sons and dependents… and children… fell into the hands of the victors.”

It is related that this Muhammad Bakhtiyar was a Khil-ji, of Ghor, of the province of Garmsir. He was a very smart, enterprising, bold, courageous, wise and experienced man. .... Being a bold and enterprising man he used to make incursions into the districts of Muni (Monghir), and Behar, and bring away much plunder until in this manner he obtained plenty of horses, arms, and men. The fame of his bravery and of his plundering raids spread abroad, and a body of Khiljis joined him from Hindustan. His exploits were reported to Sultan Kutbu-d din, and he sent him a dress and showed him great honour. Being thus encouraged, he led his army to Behar and ravaged it. In this manner he continued for a year or two to plunder the neighbourhood, and at last prepared to invade the country.... Muhammad Bakhtiyar with great vigour and audacity rushed in at the gate of the fort and gained possession of the place. Great plunder fell into the hands of the victors. Most of the inhabitants of the place were Brahmans with shaven heads. They were put to death. Large numbers of books were found there, and when the Muhammadans saw them they called for some persons [p. 55] to explain their contents, but all the men had been killed. It was discovered that the whole fort and city was a place of study (madrasa). In the Hindi language the word Behar (vihar) means a college.