Narada Purana — Purva Bhaga, Shloka 4
Mahāviṣṇu-Mantras: Aṣṭākṣarī, Sudarśana-Astra, Nyāsa Systems, Āvaraṇa-Pūjā, and Prayogas
छन्दः प्रोक्तं च गायत्री देवता विष्णुख्ययः । ॐ बीजं यं च तथा शक्तिर्विनियोगोऽखिलाप्तये ॥ ४ ॥
chandaḥ proktaṃ ca gāyatrī devatā viṣṇukhyayaḥ | oṃ bījaṃ yaṃ ca tathā śaktirviniyogo'khilāptaye || 4 ||
韻律（chandas）はガーヤトリーと説かれ、主宰神（devatā）はヴィシュヌとして名高き御方である。種子音（bīja）はオーム、また「yaṁ」はシャクティとされ、その用法（viniyoga）は一切の成就を得るためである。
Sanatkumara (teaching Narada)
Vrata: none
Primary Rasa: shanta
Secondary Rasa: bhakti
FAQs
It codifies the mantra’s essentials—metre (chandas), deity (devatā), seed (bīja), power (śakti), and application (viniyoga)—showing that correct mantra-vidhi aligns sound, intention, and devotion toward Viṣṇu for complete attainment.
By naming Viṣṇu as the devatā and prescribing a focused viniyoga, it frames mantra-recitation as disciplined worship: devotion becomes effective when directed to the Lord with proper ritual and inner intent.
Chandas (prosody) is explicit via the Gāyatrī metre, and the verse also demonstrates applied mantra-śāstra conventions (bīja–śakti–viniyoga), a technical toolkit used in Vedic and tantric-style ritual manuals.