Mahabharata 7.128.29

ततो युधिष्ठिरो राजा तव पुत्रस्य मारिषशरं परमदुर्वारं प्रेषयामास संयुगेस तेन भृशसंविद्धो निषसाद रथोत्तमे

tato yudhiṣṭhiro rājā tava putrasya māriṣaśaraṃ paramadurvāraṃ preṣayāmāsa saṃyugesa tena bhṛśasaṃviddho niṣasāda rathottame

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