Srimad Bhagavatam Canto 09, Chapter 18, Text 41

SB 9.18.41

turvasus coditah pitra
 druhyus canus ca bharata
pratyacakhyur adharmajña
 hy anitye nitya-buddhayah
 
Translation by His Divine Grace A. C. Bhaktivedanta Swami Srila Prabhupada: 
 
O Maharaja Pariksit, Yayati similarly requested his sons Turvasu, Druhyu and Anu to exchange their youth for his old age, but because they were unaware of religious principles, they thought that their flickering youth was eternal, and therefore they refused to carry out their father’s order.
Srimad Bhagavatam Canto 09, Chapter 18, Text 40
Srimad Bhagavatam Canto 09, Chapter 18, Text 42