Bhishma, Kripa and Drona, along with Karna, O slayer of Madhu, are incapable of being vanquished even by the gods, how can they be so by the sons of Pandu?
न हि भीष्मकृपद्रोणाः सकर्णा मधुसूदन। देवैरपि युधा जेतुं शक्याः किमुत पाण्डवैः॥