The Geographical Dictionary of Ancient and Mediaeval India c5.s11.45

c5.s11.45

Mahakausika—It is formed by the seven Kosīs of Nepal, which are the Milamchi, the Sun Kosī (Sona Kosī) or the Bhotea Kosī, the Tamba Kosī, the Likhu Kosī, the Dudh Kosī, the Aruna (Padma P, Svarga, ch 19, Mbh, Vana, ch 84) and the Tamor (Tamra of the Mbh, Vana, ch 84) The union of the Tamor, the Aruna and the Sun Kosī forms the Triveni, a holy place of pilgrimage The Triveni is immediately above Varāha kshetra in Purnea above Nathpur, at the point where or close to which the united Kosīs issue into the plains (JASB, XVII, pp 638, 647, map at p 761) See Baraha-kshetra. Of the seven Kosīs, the Tamba or Tamar, and Likhu are lost in the Sun Kosī and the Barun in the Aruna (Ibid, p 641 note)