The Great Epic of the Bhārata dynasty 1.79.24

1.79.24

pūro tvaṃ me priyaḥ putrastvaṃ varīyānbhaviṣyasi |
jarā valī ca me tāta palitāni ca paryaguḥ |
kāvyasyośanasaḥ śāpānna ca tṛpto'smi yauvane || 24 ||

"Yayati at last turned to his youngest child, Puru, and addressing him said, 'Thou art, O Puru, my youngest son! But thou shall be the first of all! Decrepitude, wrinkles, and whiteness of hair have come over me in consequence of the curse of Kavya called also Usanas. I have not yet however, been satiated with my youth. O Puru, take thou this my weakness and decrepitude! With thy youth I shall enjoy for some years the pleasures of life. And when a thousand years have passed away, I shall give back to thee thy youth and take back my own decrepitude.'