Srimad Bhagavatam Canto 03, Chapter 12, Text 21

 SB 3.12.21

athabhidhyayatah sargam
 dasa putrah prajajñire
bhagavac-chakti-yuktasya
 loka-santana-hetavah
 
Translation by His Divine Grace A. C. Bhaktivedanta Swami Srila Prabhupada: 
 
Brahma, who was empowered by the Supreme Personality of Godhead, thought of generating living entities and begot ten sons for the extension of the generations.
Srimad Bhagavatam Canto 03, Chapter 12, Text 20
Srimad Bhagavatam Canto 03, Chapter 12, Text 22