Mahabharata 7.111.15

ते तस्य कवचं भित्त्वा तथा बाहुं च दक्षिणम्अभ्यगुर्धरणीं तीक्ष्णा वल्मीकमिव पन्नगाः

te tasya kavacaṃ bhittvā tathā bāhuṃ ca dakṣiṇamabhyagurdharaṇīṃ tīkṣṇā valmīkamiva pannagāḥ

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