Srimad Bhagavatam Canto 08, Chapter 08, Text 31

SB 8.8.31

athodadher mathyamanat
 kasyapair amrtarthibhih
udatisthan maharaja
 purusah paramadbhutah
 
Translation by His Divine Grace A. C. Bhaktivedanta Swami Srila Prabhupada: 
 
O King, thereafter, while the sons of Kasyapa, both demons and demigods, were engaged in churning the Ocean of Milk, a very wonderful male person appeared.
Srimad Bhagavatam Canto 08, Chapter 08, Text 30
Srimad Bhagavatam Canto 08, Chapter 08, Text 32