Narada Purana — Purva Bhaga, Shloka 16
The Exposition of Nṛsiṁha Worship-Mantras, Nyāsa, Mudrās, Yantras, Kavaca, and Nṛsiṁha Gāyatrī
ब्रह्मा मुनिस्तु गायत्री छन्दोऽनुष्टुबुदाहृतम् । देवता नृहरिश्चास्य सर्वेष्टफलदायकः ॥ १६ ॥
brahmā munistu gāyatrī chando'nuṣṭubudāhṛtam | devatā nṛhariścāsya sarveṣṭaphaladāyakaḥ || 16 ||
この（真言・作法）において、ブラフマー（Brahmā）がリシ（ṛṣi、見者）と宣せられ、韻律（chandas）はアヌシュトゥブ（Anuṣṭubh）とされる。主尊は人獅子のヴィシュヌ、ニṛハリであり、あらゆる願いの果を授ける。
Narada (within a Narada–Sanatkumara style instructional frame; verse gives mantra-lakṣaṇa identifiers)
Vrata: none
Primary Rasa: shanta
Secondary Rasa: bhakti
FAQs
It states the classical mantra-identifiers—ṛṣi, chandas, and devatā—showing that correct Vedic application culminates in devotion to Nṛhari, the giver of all desired spiritual and worldly fruits.
By naming Nṛhari (Viṣṇu as Narasiṁha) as the presiding deity and the bestower of results, it centers the technical mantra framework on Viṣṇu-bhakti as the efficacious refuge.
Chandas (a Vedāṅga) is explicitly invoked via the Anuṣṭubh metre, along with the standard ritual-grammar of mantra usage: knowing the ṛṣi, metre, and deity before recitation.