(b) The modern name of Kubha River is Kabul River. It emerges in the Sanglakh range of the Hindu Kush mountains in Afghanistan and drains into the Indus River near Attock, Pakistan. The modern name of Parushni River is Ravi River. It was also known as Iravati River in Vedic times. It is a transboundary river of India and Pakistan. It rises in the Bara Bhangal in Himachal Pradesh and drains into the ArabianSea. The modern name of Sadanira River is Gandak River. It is the left bank tributary of Ganga River. It is also known as Narayani River and originates in the Himalayas in Nepal. The modern name of Satudri River is Sutlej River. It originates from the Kailash mountain ranges in Tibet. It is the eastern-most tributary of the Indus River.