The Explanation of Sandhyā and Related Daily Observances
Saṅdhyā-ādi Nitya-karma-Vidhi
पृष्ठवंशे वमित्युक्तं नाभौ भं हृदये तु मम् । यादिसप्तापि धातुस्था हं प्राणे लं तथात्मनि ॥ १०५ ॥
pṛṣṭhavaṃśe vamityuktaṃ nābhau bhaṃ hṛdaye tu mam | yādisaptāpi dhātusthā haṃ prāṇe laṃ tathātmani || 105 ||
กล่าวกันว่าให้วาง ‘วํ’ (vaṃ) ไว้ที่แนวกระดูกสันหลัง, ‘ภํ’ (bhaṃ) ที่สะดือ, และ ‘มํ’ (maṃ) ที่หัวใจ; ส่วนอักษรทั้งเจ็ดที่ขึ้นต้นด้วย ‘ยะ’ ให้สถิตในธาตุทั้งหลาย; ‘หํ’ (haṃ) อยู่ในปราณ และ ‘ลํ’ (laṃ) อยู่ในอาตมัน
Sanatkumara (teaching Narada in a Vedanga/technical context of mantra-nyasa)
Vrata: none
Primary Rasa: shanta
Secondary Rasa: adbhuta
It presents a nyāsa-style inner mapping of mantra-syllables onto the body—spine, navel, heart, dhātus, prāṇa, and ātman—showing how recitation is internalized as a yogic-sacred physiology aimed at purification and realization.
By prescribing internal placement of sacred sounds, it turns mantra-japa into an embodied act of remembrance; such inward worship supports steady devotion by linking breath, heart, and self to continuous mantra-awareness.
It reflects Śikṣā (phonetics/mantra-sound discipline) and allied mantra-vidyā: precise syllable identification (e.g., ya-varga group) and their ritual-yogic application through nyāsa with prāṇa and bodily dhātus.