Mahabharata 13.126.10

व्रतं चचार धर्मात्मा कृष्णो द्वादशवार्षिकम्दीक्षितं चागतौ द्रष्टुमुभौ नारदपर्वतौ

vrataṃ cacāra dharmātmā kṛṣṇo dvādaśavārṣikamdīkṣitaṃ cāgatau draṣṭumubhau nāradaparvatau

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