Narada Purana — Purva Bhaga, Shloka 99
Kṛṣṇādi-mantra-varga-varṇana
Classification of Krishna and Related Mantras
शरणं गत इत्यंतो मन्त्रो द्वात्रिंशदक्षरः । नारदोऽस्य मुनिश्छंदो गायत्री चाप्यनुष्टुभम् । देवः सुतप्रदः कृष्णः पादैः सर्वेण चांगकम् ॥ ९९ ॥
śaraṇaṃ gata ityaṃto mantro dvātriṃśadakṣaraḥ | nārado'sya muniśchaṃdo gāyatrī cāpyanuṣṭubham | devaḥ sutapradaḥ kṛṣṇaḥ pādaiḥ sarveṇa cāṃgakam || 99 ||
「シャラナン・ガタ（帰依せり）」の語をもって終わるこの真言は三十二音節より成る。そのリシ（ṛṣi）は聖仙ナーラダ、韻律（chandas）はガーヤトリー、またアヌシュトゥブ。主宰神は子を授けるクリシュナであり、諸パーダ（pāda）すべてが合してその支分（aṅga）となる。
Narada (teaching mantra-vidhi within Vedanga-style classification)
Vrata: none
Primary Rasa: shanta
Secondary Rasa: bhakti
FAQs
It formalizes how a mantra is authenticated and applied—by stating its syllable-count, ṛṣi, chandas, and devatā—so that recitation is aligned with Vedic method and yields the intended fruit (here, Kṛṣṇa as sutaprada).
By naming Kṛṣṇa as the devatā of the mantra and identifying it as a ‘taking refuge’ (śaraṇaṃ gata) formula, it frames the practice as surrender-based devotion supported by correct mantra procedure.
Chandas and mantra-śāstra method: counting akṣaras (32 syllables), identifying ṛṣi (Nārada), and specifying metres (Gāyatrī/Anuṣṭubh) and aṅga/pāda structure for proper ritual recitation.