Mahabharata 3.149.6

तद्रूपं महदालक्ष्य भ्रातुः कौरवनन्दनःविसिस्मिये तदा भीमो जहृषे च पुनः पुनः

tadrūpaṃ mahadālakṣya bhrātuḥ kauravanandanaḥvisismiye tadā bhīmo jahṛṣe ca punaḥ punaḥ

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