Mahabharata 1.123.74

अथाब्रवीन्महात्मानं भारद्वाजो महारथम्गृहाणेदं महाबाहो विशिष्टमतिदुर्धरम्अस्त्रं ब्रह्मशिरो नाम सप्रयोगनिवर्तनम्

athābravīnmahātmānaṃ bhāradvājo mahārathamgṛhāṇedaṃ mahābāho viśiṣṭamatidurdharamastraṃ brahmaśiro nāma saprayoganivartanam

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