Srimad Bhagavatam Canto 08, Chapter 06, Text 17

SB 8.6.17

eka evesvaras tasmin
 sura-karye suresvarah
vihartu-kamas tan aha
 samudronmathanadibhih
 
Translation by His Divine Grace A. C. Bhaktivedanta Swami Srila Prabhupada: 
 
Although the Supreme Personality of Godhead, the master of the demigods, was capable of performing the activities of the demigods by Himself, He wanted to enjoy pastimes in churning the ocean. Therefore He spoke as follows.
Srimad Bhagavatam Canto 08, Chapter 06, Text 16
Srimad Bhagavatam Canto 08, Chapter 06, Text 18