The Description of the Four Durgā Mantras
निरोधिकायामर्द्धेंदुनादे नादांतयोः पुनः । उन्नतांसेषु वक्त्रे च ध्रुवमण्डलके शिवे ॥ १२२ ॥
nirodhikāyāmarddheṃdunāde nādāṃtayoḥ punaḥ | unnatāṃseṣu vaktre ca dhruvamaṇḍalake śive || 122 ||
നിരോധികാ നാഡിയിൽ, അർദ്ധചന്ദ്രനാദത്തിൽ, നാദത്തിന്റെ ഇരുവശാന്തങ്ങളിലും; ഉയർത്തിയ ഭുജങ്ങളിൽ, മുഖത്തിൽ, ശുഭ ധ്രുവമണ്ഡലത്തിൽ—അവിടെയേ ചിത്തം സ്ഥാപിക്കണം।
Sanatkumara (teaching Narada)
Vrata: none
Primary Rasa: shanta
Secondary Rasa: adbhuta
It maps specific inner loci where attention is to be stabilized so that nāda (subtle sound) becomes a support for nirodha (restraint), leading the mind toward steadiness and liberation-oriented absorption.
While primarily yogic/technical, it supports bhakti indirectly by training one-pointedness; a steadied mind can hold divine remembrance without distraction, making devotion continuous and deeper.
This belongs to the technical-yogic instruction stream associated with Vedāṅga-style disciplines (especially Śikṣā and subtle phonetics of sound), using nāda as a practical method of concentration.