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
ततः द्वादशाक्षरविद्यया करन्यासं कुर्यात्। प्रणवादियकारान्तं मन्त्राक्षराणि अङ्गुल्यग्रेषु दक्षिणहस्तस्य तर्जन्यादारभ्य वामहस्तस्य तर्जनीपर्यन्तं विन्यसेत्; शिष्टानि चत्वारि अक्षराणि अङ्गुष्ठपर्वसु न्यसेत्।
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.