Mahāviṣṇu-Mantras: Aṣṭākṣarī, Sudarśana-Astra, Nyāsa Systems, Āvaraṇa-Pūjā, and Prayogas
परमन्त्रान् ग्रसद्वन्द्वं भक्षयद्वितयं पुनः । भूकानि त्रासयद्वंद्वं वर्मफड्वह्निसुंदरी ॥ १९० ॥
paramantrān grasadvandvaṃ bhakṣayadvitayaṃ punaḥ | bhūkāni trāsayadvaṃdvaṃ varmaphaḍvahnisuṃdarī || 190 ||
हा (मंत्ररूप) पर-मंत्रांना ग्रासतो व द्वंद्वांवर विजय मिळवतो; पुन्हा द्विविध विघ्नांना भक्षतो. तो भूतांना त्रस्त करतो; तो कवच, ‘फट्’ची प्रतिघातशक्ती, अग्नी आणि शुभ रक्षणशक्तीस्वरूप आहे.
Narada (teaching a technical mantra-prayoga within Vedanga/ritual science context)
Vrata: none
Primary Rasa: vira
Secondary Rasa: bhayanaka
It emphasizes rakṣā (spiritual protection): a properly applied mantra acts like armor, neutralizing hostile influences, inner disturbances (dvandvas), and fear-causing forces.
While technical in tone, it supports bhakti indirectly: protection and steadiness help the practitioner maintain japa, vrata, and worship without being shaken by obstacles or fear.
Mantra-prayoga used in ritual applications—especially kavaca (protective formula) and the use of ‘phaṭ’ as a repelling syllable in warding rites.