Kalayavana
Kālayavana (, death amongst descendants of Turvasu) was a king who invaded Mathurā with an army of three million Yavanas against Sri Krishna. Legend. According to the Vishnu Purana and Harivamsa, Kālayavana was a Yavana king. He was the partial incarnation of Krodha. The legend goes like this: Jarasandha, Kansa's father-in-law, and the ruler of Magadha attacks Mathura seventeen times but is beaten by Krishna every time. Jarasandha unable to defeat Krishna on his own made an alliance with Kālayavana. Kālayavana was a powerful Yavana warrior who had gotten a boon from Lord Shiva that on the  battlefield he will be undefeatable. Krishna, thinking that by a struggle with two foes at once the people would be exhausted, built a new strong and glorious city, named 'Dwārkā', to which he conducted the inhabitants of Mathurā. Kālayavana attacked Mathurā with an army of 3 million Yavanas. Sri Krishna realizing that the Yavanas have greatly outnumbered all the yādavas decided to challenge Kālayavana for a duel. Sri Krishna strategically fled the battlefield. Shri Krishna lured Kalayavana into the cave where the great king of "Treta Yuga", Muchukunda, one of the forefathers of Lord Shri Rāma was in a deep  slumber of thousands of years after helping devas in an epic war with asuras. Contemplating an absolutely undisturbed sleep he was given a boon by Lord Indra that anyone who dared to disturb his sleep would get burnt to ashes immediately. Fast forward to "Dvapara Yuga", in the darkness deep inside the cave, Sri Krishna covered Muchukunda with his shawl. Kālayavana assuming him to be Krishna kicked him, thus disturbing his sleep and burning into ashes. And then Muchukunda was delighted to see Lord Shri Krishna there. Sri Krishna advises him to perform Tapasyā to cleanse the accumulated sins to  attain Moksha (liberation). After meeting with the lord, Muchukunda sets out of the cave. Muchukunda then goes north to Gandamādana Mountain and from there to Badrikāshrama for doing penance and finally achieves liberation, the Moksha. The hills and the cave where Muchukunda rested is located at Ranchodji teerth, district Lalitpur in the state of Uttar Pradesh. After knowing the fate of their king the Yavana armies fled to the Yavana kingdom, thus Krishna saved Dwarka from mass-destruction. This Leela yielded the name of Ranchod to Lord Krishna.