PURPORT

The River Tapi is presently known as Tapti. The river's source is a mountain called Multai, and the river flows through the state of Saurastra and into the western Arabian Sea. Mahismati-pura is mentioned in Mahabharata in connection with Sahadeva's victory. Sahadeva, the youngest brother of the Pandavas, conquered that part of the country. As stated in :

tato ratnany upadaya
purim mahismatim yayau
tatra nilena rajna sa
cakre yuddham nararsabhah

"After acquiring jewels, Sahadeva went to the city of Mahismati, where he fought with a king called Nila."