Mahabharata 8.12.17

इत्येतन्महदाश्चर्यं दृष्ट्वा श्रुत्वा च भारतअश्वत्थामा सुसंयत्तः कृष्णावभ्यद्रवद्रणे

ityetanmahadāścaryaṃ dṛṣṭvā śrutvā ca bhārataaśvatthāmā susaṃyattaḥ kṛṣṇāvabhyadravadraṇe

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