Nārāyaṇa-kavaca — The Armor of Lord Nārāyaṇa
करन्यासं तत: कुर्याद् द्वादशाक्षरविद्यया । प्रणवादियकारान्तमङ्गुल्यङ्गुष्ठपर्वसु ॥ ७ ॥
kara-nyāsaṁ tataḥ kuryād dvādaśākṣara-vidyayā praṇavādi-ya-kārāntam aṅguly-aṅguṣṭha-parvasu
Then one should chant the mantra composed of twelve syllables [oṁ namo bhagavate vāsudevāya]. Preceding each syllable by the oṁkāra, one should place the syllables of the mantra on the tips of his fingers, beginning with the index finger of the right hand and concluding with the index finger of the left. The four remaining syllables should be placed on the joints of the thumbs.
This verse instructs that one should perform kara-nyāsa with the twelve-syllable mantra, assigning its syllables to the joints of the fingers and thumb, beginning with oṁ and ending with ‘ya’.
Because the Nārāyaṇa-kavaca is presented as a devotional protective practice; Śukadeva explains the proper method (vidhi) so the listener understands how remembrance of Nārāyaṇa is invoked through disciplined mantra application.
Use structured, mindful repetition of a Vaiṣṇava mantra with focused attention (even if simplified), turning prayer into concentrated remembrance that strengthens steadiness and devotion.