SB 10.77.24
katham ramam asambhrantam
jitvajeyam surasuraih
salvenalpiyasa nitah
pita me balavan vidhih
Translation:
[Lord Krsna said:] Balarama is ever vigilant, and no demigod or demon can defeat Him. So how could this insignificant Salva defeat Him and abduct My father? Indeed, fate is all-powerful!