Yayati

One day, Sharmishtha, daughter of the daitya king Vrishaparvan, and Devayani, daughter of Shukracharya, go with Sharmishtha's retinue to bathe in a forest pool not far from their home. While they bathe, Indra transforms himself into a strong wind, collecting their clothes upon the stream's banks, and depositing them in a heap. In the ensuing confusion, the two women accidentally don each other's clothes. In the quarrel that ensued, Sharmishtha throws the naked Devayani into a well, and leaves the forest with her retinue. Later, Yayāti, son of Nahusha, chanced upon the pool after hunting, and helps Devayani to climb out of it, before returning to his kingdom. Devayani sent her maid, Ghurnika, to her father, and informed him about the quarrel. Shukra is enraged, and to placate him, Vrishaparvan agrees to offer a thousand maids, along with his daughter Sharmishtha, to serve Devayani. Some time afterwards, Yayati meets Devayani again, and the two fall in love. After Shukra offers his consent, the two marry.[6]

When Devayani moves to Yayati's palace after her marriage, Sharmishtha, now her maidservant, also goes along. Shukracharya, however, sternly warns Yayati never to have any affairs with Sharmishtha.

After a long while, Sharmishtha comes to Yayāti, and requests him to give her a child. He refuses, stating that if he were to do so, he would face the wrath of Shukracharya. Nevertheless, Sharmishtha manages to convince him, saying that it would be against dharma if he were to refuse her request; he being the king, it was his responsibility to ensure the needs of the citizens, and she is desperate to have a child. He reluctantly agrees, and they begin an affair, in the hopes that she would conceive. In due course, Devayani gives birth to two sons: Yadu and Turvasu, while Sharmishtha begets three sons: Druhyu, Anudruhyu, and Puru.

Eventually, Devayani learns of her husband's affair with Sharmishtha, and complains to her father. Enraged at his son-in-law's disobedience, Shukracharya curses Yayāti with premature old age in punishment for inflicting such pain upon his daughter. However, on learning Sharmishtha's desire to become a mother, he later relents, telling Yayāti that if he could persuade one of his (Yayāti's) sons to swap ages with him, he will be able to escape the curse, and regain his lost youth for a while. Yayāti asks his sons if one of them would give up his youth to rejuvenate his father, but all refuse except the youngest, Puru (one of his sons by Sharmishtha). In grateful recognition of Puru's filial devotion, Yayāti makes him his legitimate heir, and it is from the line of Puru - later King Puru - that the Kuruvamsha (Kuru dynasty) later arises.[7]

In the words of the story, Yayāti enjoys all the pleasures of the senses 'for a thousand years' and, by experiencing passion to the full, comes to realise its utter futility, saying: "Know this for certain... not all the food, wealth and women of the world can appease the lust of a single man of uncontrolled senses. Craving for sense-pleasures is not removed but aggravated by indulgence even as ghee poured into fire increases it....One who aspires to peace and happiness should instantly renounce craving and seek instead that which neither grows old, nor ceases - no matter how old the body may become."[5] Having found wisdom by following the road of excess, Yayāti gratefully returns the youth of his son Puru, and takes back his old age in return, renouncing the world to spend his remaining days as a forest ascetic. His spiritual practices are, at long last, blessed with success and, alone in the deep woods, he is rewarded with ascension to Svarga - the heavenly realm of the righteous, ruled by Indra, that is but one step below the ultimate liberation of moksha.[5]

Yayati ascended to heaven due to his virtues. He was so virtuous that he could travel to many celestial regions. Sometimes, he went to the region of Brahma and sometimes stayed at Amaravati, the region of Indra. One day, when Yayati and Indra were conversing, Indra asked him questions. Indra asked him how many sacrifices he did and whom he was equal to in sacrifices. Yayati boastingly said the number of his sacrifices was innumerable, and proclaimed his superiority. Indra was angered by this bragging, and threw Yayati out of heaven. Yayati begged his pardon, so Indra said even though he would be thrown out of heaven, he would fall amidst virtuous and wise humans. Thus, while Yayati fell from the celestial region, he got stuck in the firmament. His grandsons: Ashtaka, Vasuman, Prattarddana, and Sivi (kings and sons of Mamata or Madhavi) met him. They enquired who he was, and why he was thus. They asked about heaven, about hell, about rebirth. Yayati recited everything. Then, out of compassion, they offered their own meritorious powers to Yayati. With these merits, Yayati attained again the realm of heaven. Five golden chariots arrived and took them to the region of eternal bliss, because of the merits of his grandsons and his own.

• Yadu gave rise to the Yaduvamsha, the ancestral lineage of Krishna
• Turvasu and his descendants formed the Yavana Kingdom
• Madhavi or Mamata married four times and had one son with each husband. She married Haryaśva, who belonged to the Suryavamsha dynasty; Divodasa, King of Kashi; Ushinara, King of Bhoja, and the Maharishi Vishvamitra.
  • With the Ikshvaku King Haryaśva, she had a son named Vasumanas, who became a wealthy king, and practised charity
  • With Divodasa, the King of Kaśi, she had the mighty warrior King Pratarddana who acquired weapons from Sage Bharadvaja, and defeated the Haihayas and the Videhas in battle
  • With the Bhoja king Ushinara, she had Shibi, who became a Chakravarti and conquered the world, and practised dharma and charity
  • With Sage Vishvamitra, she had a son named Ashtaka, who became famous for performing sacrifices and charity

• Druhyu and his descendants, the Vaibhoja Vamsha, according to Tripura tradition, are believed to have formed the Twipra Kingdom.[8]
• Anudruhyu gave rise to a Mleccha tribe, Tusharas (Tukharas), with their kingdom being located in the north west of India as per the epic Mahabharata. In Bhagavata Purana, the Uśīnaras, the Sibi, the Madras, and the Kekayas are the direct descendants of Anudruhyu. Sibi or Sivi is stated to be son of Usinara.[9]
• Puru

Another one of his descendants (through Puru) was King Bharata, the son of King Dushyanta and Shakuntala. Further descendants were part of the Kuru Kingdom, including Shantanu, Dhritarashtra, Pandu, Yudhishthira, Abhimanyu, and Parikshit.