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Jamdagni's marriage to Renuka and the birth of Parashurama, the taking of the kingdom, Yogashastra Dvitiya Prakash, verse 27. He prepared a Brahmachru for his wife and a Kshatracharu, imbued with mantras, for his sister-in-law to produce a Kshatriya son. When both the Charus were ready through mantra-sadhana, the tapaswi gave them to Renuka. Renuka thought, "I am here in this dense forest, unprotected like a deer. It would be good if I had a Kshatriya son who could protect me." Thinking thus, she consumed the Kshatracharu instead of the Brahmachru and gave the Brahmachru to her sister. In due time, both had sons. Renuka's son was named 'Rama' and her sister's son was named 'Kritavirya'. Despite being the son of a Rishi, their son 'Rama', with his Kshatriya prowess, grew stronger like a blazing fire in water at the hermitage of the tapaswi Jamdagni. One day, a Vidyadhara came to the ashram. He had lost his celestial knowledge due to suffering from dysentery. Rama, like a brother, served him with medicine and other things. In return for his service, the Vidyadhara gave Rama the Parshavi Vidya, the knowledge of the axe. He went into the forest called Sharavana and practiced the Parshavi Vidya. Due to this, Rama later became known as Parashurama.
Once, out of longing to meet her sister, Renuka asked her husband's permission and went to Hastinapur. For lovers, nothing is far. Seeing his sister-in-law, the charming Renuka, Anantvirya, showering her with love and affection, caressed her delicate limbs and engaged in amorous play with her. Truly, lust is very unruly. Just as Indra had experienced sexual pleasure with Ahalya, so too did Anantvirya, according to his desire, experience sensual pleasure with the tapaswi's wife. Just as Brihaspati had a son named Uththy from his wife Mamata, so too did Anantvirya have a son from Renuka. Rishi Jamdagni brought Renuka back home with her son. It is true that a man, engrossed in the allure of a woman, often does not see her faults. Seeing Renuka with her son, like a vine bearing fruit out of season, Parashurama became enraged. Without hesitation, he quickly killed the child with his axe. Renuka had this matter conveyed to Anantvirya through her sister. Hearing this, Anantvirya's anger flared up like fire from the wind. The extremely powerful and strong Anantvirya, the king, immediately arrived at Jamdagni's ashram. As soon as he arrived, like a maddened elephant, he destroyed and corrupted Jamdagni's ashram, uprooting the trees. He harassed the tapaswis there, taking away their cows, calves, and everything else. And, like a Kesari lion, Anantvirya, the king, returned to Hastinapur, dancing with joy. Hearing the lamentations of the distressed tapaswis, the account of the injustice done to them and the struggle they had endured, and knowing about the destruction of the ashram, Parashurama, filled with rage, ran with his axe, like Yama himself. Parashurama, the son of Jamdagni, eager to witness the battle of many warriors, chopped Anantvirya into pieces with his terrifying axe, like wood. After the death of Anantvirya, the leading citizens of the kingdom placed his son on the throne. He was still young. One day, hearing from his mother about the death of his father and receiving permission from his mother, he went and killed Jamdagni, like a serpent, to avenge his father's death. Parashurama's anger became extremely fierce at the news of his father's murder. He immediately reached Hastinapur and with a single blow of his axe, he killed Kritavirya. What is impossible for Yama? After the death of Kritavirya, Parashurama himself ascended the throne. The kingdom always belongs to the strong; there is no traditional order. Just as a deer flees in fear from a lion, so too did Kritavirya's pregnant wife, after Parashurama took control of Hastinapur, reach the ashram of the tapaswis in fear of Parashurama. The tapaswis kept her safe in a subterranean chamber, like a treasure.
One day, the queen gave birth to a beautiful and healthy son at an auspicious time, indicated by fourteen great dreams, in the subterranean chamber. Because she was kept safe in the subterranean chamber, her mother named him 'Subhumi'. Wherever there were Kshatriyas, Parashurama's axe became a living embodiment of fiery anger, burning and killing thousands of Kshatriyas. One day, Parashurama accidentally came to the ashram where Subhumi was being raised. Wherever there is smoke, there is fire.