The Description of the Four Durgā Mantras
रत्याद्या मृलहृदयभ्रुमध्येषु विचक्षणः । वाक्शक्तिलक्ष्मीबीजाद्या मातंग्यंताः प्रविन्यसेत् ॥ १०९ ॥
ratyādyā mṛlahṛdayabhrumadhyeṣu vicakṣaṇaḥ | vākśaktilakṣmībījādyā mātaṃgyaṃtāḥ pravinyaset || 109 ||
ผู้ปฏิบัติผู้รอบรู้พึงวางนยาสะมนต์ที่เริ่มด้วย “รัตยา” ณฐานมูล หทัย และระหว่างคิ้ว; และพึงวางมนต์ที่เริ่มด้วยพยางค์บีชะแห่งวากศักติและลักษมี สืบไปจนถึงมนต์แห่งมาตังคี॥๑๐๙॥
Narada (teaching in a technical/ritual context within Vedanga-style instructions)
Vrata: none
Primary Rasa: shanta
Secondary Rasa: adbhuta
It teaches nyāsa—installing mantra-energies in key inner centers (root, heart, brow)—so the sādhaka’s body becomes a fit vessel for mantra-siddhi and focused worship.
Though technical, it supports devotion by prescribing disciplined inner placement of divine names/seed-mantras, making worship more concentrated and reverent rather than merely external.
A practical ritual-technology: mantra-nyāsa (a procedural discipline aligned with śikṣā/mantra-prayoga traditions), specifying where and in what sequence mantras are to be installed.