Mahabharata 7.81.18

ततो युधिष्ठिरो द्रोणं नवत्या नतपर्वणाम्आजघ्ने भरतश्रेष्ठ सर्वमर्मसु भारत

tato yudhiṣṭhiro droṇaṃ navatyā nataparvaṇāmājaghne bharataśreṣṭha sarvamarmasu bhārata

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