Mahabharata 7.166.55

सोऽहं नारायणास्त्रेण महता शत्रुतापनशत्रून्विध्वंसयिष्यामि कदर्थीकृत्य पाण्डवान्

so'haṃ nārāyaṇāstreṇa mahatā śatrutāpanaśatrūnvidhvaṃsayiṣyāmi kadarthīkṛtya pāṇḍavān

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