The Description of the Four Durgā Mantras
मंत्रस्य सिद्ध्यै यतवाग्ध्यायन्देवीं निरंतरम् । सहस्रादूर्द्धूतः शत्रुर्ज्वरेण परिगृह्यते ॥ १६३ ॥
maṃtrasya siddhyai yatavāgdhyāyandevīṃ niraṃtaram | sahasrādūrddhūtaḥ śatrurjvareṇa parigṛhyate || 163 ||
Pour obtenir la siddhi du mantra, celui qui retient sa parole et médite sans relâche sur la Déesse fait que l’ennemi—même repoussé au loin—soit saisi par la fièvre.
Sanatkumara (in instruction to Narada on mantra-prayoga within technical disciplines)
Vrata: none
Primary Rasa: raudra
Secondary Rasa: bhayanaka
It links mantra-siddhi to inner discipline—especially vāg-niyama (restraint of speech) and uninterrupted dhyāna—showing that spiritual power is rooted in sustained focus and self-control.
Bhakti is expressed here as niraṃtara-upāsanā—continuous remembrance and meditation on Devī—implying that steady devotion is itself a means to attain efficacy in sacred practice.
It reflects technical mantra-prayoga: the sādhanā prerequisites (speech-restraint, continuous meditation) used in ritual/occult applications, aligning with the text’s Third Pada focus on disciplined methods within Vedic auxiliary sciences.