Mahabharata 8.50.21

एवमुक्तोऽब्रवीत्पार्थं केशवो राजसत्तमशक्तोऽस्मि भरतश्रेष्ठ यत्नं कर्तुं यथाबलम्

evamukto'bravītpārthaṃ keśavo rājasattamaśakto'smi bharataśreṣṭha yatnaṃ kartuṃ yathābalam

Our plain-language meaning of this verse is waiting for scholar review.