Srimad Bhagavatam Canto 10, Chapter 15, Text 47

SB 10.15.47

evam sa bhagavan krsno
 vrndavana-carah kvacit
yayau ramam rte rajan
 kalindim sakhibhir vrtah
 
Translation: 
 
O King, the Supreme Lord Krsna thus wandered about the Vrndavana area, performing His pastimes. Once, surrounded by His boyfriends, He went without Balarama to the Yamuna River.
Srimad Bhagavatam Canto 10, Chapter 15, Text 46
Srimad Bhagavatam Canto 10, Chapter 15, Text 48