Śrīcakra–Mantra–Pūjāvidhi: Agastya–Hayagrīva Saṃvāda
Lalitopākhyāna Context
तिसृणामपि मूर्तीनां शक्तिर्विद्येयमीरिता / सर्वेषा मपि मन्त्राणां विद्यैषा प्राणरूपिणी
tisṛṇāmapi mūrtīnāṃ śaktirvidyeyamīritā / sarveṣā mapi mantrāṇāṃ vidyaiṣā prāṇarūpiṇī
This Vidyā is declared to be the Śakti of the three forms; and for all mantras, this Vidyā is of the nature of prāṇa, the vital breath.