Mahabharata 12.272.4

कथं विनिहतो वृत्रः शक्रेण भरतर्षभधर्मिष्ठो विष्णुभक्तश्च तत्त्वज्ञश्च पदान्वये

kathaṃ vinihato vṛtraḥ śakreṇa bharatarṣabhadharmiṣṭho viṣṇubhaktaśca tattvajñaśca padānvaye

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