There is mention of a jungle territory in the Rarh region in the Bhubaneswar stone tablet of Bhatta Bhabadeb, a minister of king Haribarmadev in the 11th century AD. It is mentioned that the Chinese monk-traveller Xuanzang (Hiuen Tsang) travelled from Champa (Bhagalpur) to Kajangala and then proceeded to Pundravardhana in the 7th century AD. He says that the northern limit of its territory was not very far from the Ganges. The forests to the south had plenty of elephants. The people were straight forward, talented and devoted to education.
- Majumdar, Dr. R.C., History of Ancient Bengal, First published 1971, Reprint 2005, p. 64, Tulshi Prakashani, Kolkata, ISBN 81-89118-01-3.
- Roy, Niharranjan, Bangalir Itihas, Adi Parba, (Bengali), first published 1972, reprint 2005, pp. 99-100, 81-93, Dey’s Publishing, 13 Bankim Chatterjee Street, Kolkata, ISBN 81-7079-270-3
- Majumdar, Dr. R.C., p. 454