The Great Epic of the Bhārata dynasty 1.79.27

1.79.27

vaiśaṃpāyana uvāca |
evamuktaḥ pratyuvāca pūruḥ pitaramañjasā |
yathāttha māṃ mahārāja tatkariṣyāmi te vacaḥ || 27 ||

"Vaisampayana said, 'Thus addressed by the king, Puru answered with humility, 'I shall do, O monarch, as thou bidest me. I shall take, O king, thy weakness and decrepitude. Take thou my youth and enjoy as thou listest the pleasures of life. Covered with thy decrepitude and becoming old, I shall, as thou commandest, continue to live, giving thee my youth.' Yayati then said, 'O Puru, I have been gratified with thee. And being gratified, I tell thee that the people in thy kingdom shall have all their desires fulfilled.'