Mahabharata 7.28.38

समासाद्य तु तं नागं बाणो वज्र इवाचलम्अभ्यगात्सह पुङ्खेन वल्मीकमिव पन्नगः

samāsādya tu taṃ nāgaṃ bāṇo vajra ivācalamabhyagātsaha puṅkhena valmīkamiva pannagaḥ

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