Giving up his body, he will give his bones to you. With those bones make a greatly fearful and strong weapon (to be called) Vajra (thunder).
स शरीरं समुत्सृज्य स्वान्यस्थीनि प्रदास्यति। तस्यास्थिभिर्महाघोरं वज्रं संस्क्रियतां दृढम्॥