Srimad Bhagavatam Canto 10, Chapter 79, Text 33

SB 10.79.33

idrg-vidhany asankhyani
 balasya bala-salinah
anantasyaprameyasya
 maya-martyasya santi hi
 
Translation: 
 
Countless other such pastimes were performed by mighty Balarama, the unlimited and immeasurable Supreme Lord, whose mystic Yoga-maya power makes Him appear to be a human being.
Srimad Bhagavatam Canto 10, Chapter 79, Text 32
Srimad Bhagavatam Canto 10, Chapter 79, Text 34