Srimad Bhagavatam Canto 10, Chapter 43, Text 23

SB 10.43.23

etau bhagavatah saksad
 dharer narayanasya hi
avatirnav ihamsena
 vasudevasya vesmani
 
Translation: 
 
[The people said:] These two boys are certainly expansions of the Supreme Lord Narayana who have descended to this world in the home of Vasudeva.
Srimad Bhagavatam Canto 10, Chapter 43, Text 21-22
Srimad Bhagavatam Canto 10, Chapter 43, Text 24