Srimad Bhagavatam Canto 07, Chapter 10, Text 60

SB 7.10.60

siddhamrta-rasa-sprsta
 vajra-sara mahaujasah
uttasthur megha-dalana
 vaidyuta iva vahnayah
 
Translation by His Divine Grace A. C. Bhaktivedanta Swami Srila Prabhupada: 
 
When the dead bodies of the demons came in touch with the nectar, their bodies became invincible to thunderbolts. Endowed with great strength, they got up like lightning penetrating clouds.
Srimad Bhagavatam Canto 07, Chapter 10, Text 59
Srimad Bhagavatam Canto 07, Chapter 10, Text 61