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.