Mahabharata 3.98.10

तस्यास्थिभिर्महाघोरं वज्रं संभ्रियतां दृढम्महच्छत्रुहणं तीक्ष्णं षडश्रं भीमनिस्वनम्

tasyāsthibhirmahāghoraṃ vajraṃ saṃbhriyatāṃ dṛḍhammahacchatruhaṇaṃ tīkṣṇaṃ ṣaḍaśraṃ bhīmanisvanam

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