Mahabharata 7.110.37

तत्राद्भुतमपश्याम भीमसेनस्य विक्रमम्संवार्याधिरथिं बाणैर्यज्जघान तवात्मजान्

tatrādbhutamapaśyāma bhīmasenasya vikramamsaṃvāryādhirathiṃ bāṇairyajjaghāna tavātmajān

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