Srimad Bhagavatam Canto 10, Chapter 52, Text 14

SB 10.52.14

so ’pi dagdhav iti mrsa
 manvano bala-kesavau
balam akrsya su-mahan
 magadhan magadho yayau
 
Translation: 
 
Jarasandha, moreover, mistakenly thought that Balarama and Kesava had burned to death in the fire. Thus he withdrew his vast military force and returned to the Magadha kingdom.
Srimad Bhagavatam Canto 10, Chapter 52, Text 13
Srimad Bhagavatam Canto 10, Chapter 52, Text 15