The Classification and Explanation of Yakṣiṇī Mantras
Kālī and Tārā Vidyās
स्वं दीर्घत्रयमन्वाढ्यमेषो वामदगन्वितः । लोकपालाय हृदयं तृतीयोऽयं शिवाक्षरः ॥ ९८ ॥
svaṃ dīrghatrayamanvāḍhyameṣo vāmadaganvitaḥ | lokapālāya hṛdayaṃ tṛtīyo'yaṃ śivākṣaraḥ || 98 ||
La syllabe « svaṃ », pourvue de trois voyelles longues et jointe à l’élément du « côté gauche », est le mantra du cœur pour le Lokapāla ; c’est la troisième syllabe de Śiva.
Sanatkumara (teaching Narada)
Vrata: none
Primary Rasa: shanta
Secondary Rasa: adbhuta
It frames a specific Śaiva bīja (“svaṃ”) as a ‘hṛdaya’—the essential inner core—showing that precise sound-structure (akṣara and vowel-length) is treated as spiritually potent in mantra-vidyā.
Bhakti here is practiced through disciplined japa and correct mantra-form: devotion is expressed by preserving the revealed phonetic form (vowel-length and components) of Śiva’s sacred syllables.
Śikṣā (Vedic phonetics) is implied—especially the role of dīrgha (long vowel quantity) and exact akṣara-combination in ensuring mantra efficacy during recitation.