SB 9.18.45

iti pramuditaḥ pūruḥ
 pratyagṛhṇāj jarāṁ pituḥ
so ’pi tad-vayasā kāmān
 yathāvaj jujuṣe nṛpa
Word for word: 
iti — in this way; pramuditaḥ — very pleased; pūruḥ — Pūru; pratyagṛhṇāt — accepted; jarām — the old age and invalidity; pituḥ — of his father; saḥ — that father (Yayāti); api — also; tat-vayasā — by the youth of his son; kāmān — all desires; yathā-vat — as required; jujuṣe — satisfied; nṛpa — O Mahārāja Parīkṣit.
Translation: 
Śukadeva Gosvāmī said: In this way, O Mahārāja Parīkṣit, the son named Pūru was very pleased to accept the old age of his father, Yayāti, who took the youth of his son and enjoyed this material world as he required.