Mahabharata 11.23.27

अस्त्रं चतुर्विधं वेद यथैव त्रिदशेश्वरःभार्गवो वा महावीर्यस्तथा द्रोणोऽपि माधव

astraṃ caturvidhaṃ veda yathaiva tridaśeśvaraḥbhārgavo vā mahāvīryastathā droṇo'pi mādhava

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