The Geographical Dictionary of Ancient and Mediaeval India c5.s9.122

c5.s9.122

Kokakshetra—The tract of land to the west of the river Kausiki, or Kusi, including the western portion of the district of Purnea in Bengal (Varaha P, ch 140, vs 53 and 72) It included the Baraha kshetra at Nathpur below the Triveni formed by the junction of the three rivers Tambar, Aruna, and Suna Kusi