Srimad Bhagavatam Canto 07, Chapter 03, Text 23

SB 7.3.23

sa tat kicaka-valmikat
 saha-ojo-balanvitah
sarvavayava-sampanno
 vajra-samhanano yuva
utthitas tapta-hemabho
 vibhavasur ivaidhasah
 
Translation by His Divine Grace A. C. Bhaktivedanta Swami Srila Prabhupada: 
 
As soon as he was sprinkled with the water from Lord Brahma’s waterpot, Hiranyakasipu arose, endowed with a full body with limbs so strong that they could bear the striking of a thunderbolt. With physical strength and a bodily luster resembling molten gold, he emerged from the anthill a completely young man, just as fire springs from fuel wood.
 
Purport by His Divine Grace A. C. Bhaktivedanta Swami Srila Prabhupada: 
 
Hiranyakasipu was revitalized, so much so that his body was quite competent to tolerate the striking of thunderbolts. He was now a young man with a strong body and a very beautiful bodily luster resembling molten gold. This is the rejuvenation that took place because of his severe austerity and penance.
Srimad Bhagavatam Canto 07, Chapter 03, Text 22
Srimad Bhagavatam Canto 07, Chapter 03, Text 24