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In the Harivamsha Purana,
In the nights of the Hemant season, those wise men, who were like gold, endured the frost-like cold, remaining in the state of Pratimā Yoga, their bodies, like lotuses, burning with the radiance of their inner light. ||210||
Those two heroes, wise men, and Muni-Rajas, purified themselves through the practice of right perception, the ten virtues, good conduct, and victory over the enemies of the soul. ||211||
They remained steadfast in self-study, meditation, and yoga, engaged in the practice of Vyayavṛtti, and through the purity of the three jewels, they were seen to have attained the state of being an example for others. ||212||
Thus, for many thousands of years, those two Muni-Rajas, Madhu and Kaiṭabha, who had accumulated a vast treasure of tapas, and who were always free from the defects of the body, ascended to the Sammed Shikhar, and there, after a month of Prāyopagama, they renounced their bodies in a state of deep meditation. ||213-214||
After renouncing their bodies, they became Indra and Sāmanika, the lords of thousands of gods and goddesses, in the heavens of Āraṇa and Acyuta. ||215||
There, they enjoyed the supreme bliss of heaven, possessing a lifespan equal to twenty-two oceans, and being endowed with the right vision. ||216||
The soul of Madhu, having fallen from heaven, was born as the son of Krishna, named Pradyumna, in the womb of Rukmini, the queen of Krishna, in the land of Bharat. ||217||
And the soul of Kaiṭabha, also having fallen from heaven, was born as the younger brother of Pradyumna, named Shamba, in the womb of Jambavati, the queen of Krishna, possessing the same radiance as Krishna. ||218||
Both Pradyumna and Shamba were extremely heroic, wise, and beautiful, possessing the last body, and due to the great joy of their previous birth, they were always eager to help each other. ||219||
The king of Vata-pura, Vira-sena Chandra-bha, consumed by the pain of separation from his beloved, remained absorbed in deep meditation, wandering for a long time in the forest of the world. ||220||
Finally, he attained the human state, becoming an ignorant ascetic, and at the end of his life, he died and became a god named Dhūmakeṭu, as brilliant as a comet. ||221||
1. Yāti M. ||