Mahabharata 7.25.17

तस्यावर्जितनागस्य म्लेच्छस्यावपतिष्यतःशिरश्चिच्छेद भल्लेन क्षिप्रकारी वृकोदरः

tasyāvarjitanāgasya mlecchasyāvapatiṣyataḥśiraściccheda bhallena kṣiprakārī vṛkodaraḥ

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