Agni Purana — Vastu-Pratishtha & Isana-kalpa, Shloka 84
Adhivāsana-vidhi
Procedure for Preliminary Consecration in Vāstu–Pratiṣṭhā / Īśāna-kalpa
लवशषचयसाश् च हकारश् च त्रिमात्रिकः प्रणवो हृदयार्णुर्वा मूलमन्त्रो ऽथवा क्वचित्
lavaśaṣacayasāś ca hakāraś ca trimātrikaḥ praṇavo hṛdayārṇurvā mūlamantro 'thavā kvacit
Les syllabes appartenant aux groupes la–va, ṣa, ca, ya et sā, ainsi que la syllabe ha—avec le Praṇava (Oṁ) à trois mātrā—sont enseignées comme la « syllabe-graine du cœur » (hṛdaya-bīja) ; ou bien, dans certains contextes, elles doivent être tenues pour le mūla-mantra (mantra racine).
Lord Agni (in discourse to the sage Vasiṣṭha, typical Agni Purāṇa dialogue frame)
Vidya Category: {"primary_vidya":"Mantra","secondary_vidya":"Tantra","practical_application":"Mantra-bīja identification for japa/nyāsa: specifying phoneme-groups (la–va, ṣa, ca, ya, sā, ha) with praṇava as hṛdaya-bīja or, contextually, as mūla-mantra.","sutra_style":true}
Encyclopedic Reference: {"reference_type":"Definition","entry_title":"Hṛdaya-bīja / Mūla-mantra phoneme set with tri-mātrā Praṇava","lookup_keywords":["hṛdaya-bīja","mūla-mantra","praṇava tri-mātrā","ha-kāra","varṇa-gaṇa"],"quick_summary":"A specific set of seed-syllables and the three-mātrā Oṃ are taught as the heart-seed for internal installation; in some ritual contexts the same set functions as the root-mantra for primary japa."}
Concept: Śabda as power: phonemes (varṇas) are not mere letters but operative śaktis; ‘heart’ and ‘root’ designations depend on ritual context (prayoga).
Application: In nyāsa, place the hṛdaya-bīja at the heart locus; in japa, treat the same as mūla-mantra when the paddhati specifies it, always prefaced/empowered by Oṃ as tri-mātrā praṇava.
Khanda Section: Mantra-vidhi (Tantric/Vaidika mantra classification and japa practice)
Primary Rasa: shanta
Secondary Rasa: adbhuta
Visual Art Cues: {"scene_description":"A manuscript-like diagram showing Sanskrit phoneme clusters (la–va, ṣa, ca, ya, sā, ha) arranged around a central Oṃ marked ‘tri-mātrā’, with arrows indicating ‘hṛdaya-bīja’ and ‘mūla-mantra’ contextual usage.","kerala_mural_prompt":"Kerala mural aesthetic applied to a sacred phoneme mandala: central Oṃ glowing, surrounding varṇa clusters in stylized script, temple-lamp ambiance, minimal figurative elements","tanjore_prompt":"Tanjore: central Oṃ in gold relief, surrounding syllable panels with gold borders, rich maroon background, ornamental floral motifs, devotional manuscript feel","mysore_prompt":"Mysore: didactic chart with clear Devanāgarī, central tri-mātrā Oṃ, labeled hṛdaya-bīja and mūla-mantra pathways, fine lines and soft colors","mughal_miniature_prompt":"Mughal miniature folio: elegant calligraphy of syllable groups around a central Oṃ, marginal annotations, delicate pigments and ruled borders, scholarly atmosphere"}
Audio Atmosphere: {"recitation_mood":"instructional","suggested_raga":null,"pace":"medium","voice_tone":"instructional"}
Sandhi Resolution Notes: लवशषचयसाश् → लव + शष + चय + साः (visarga/sibilant assimilation in transmission); हकारश् → हकारः; मूलमन्त्रोऽथवा → मूलमन्त्रः + अथवा.
Related Themes: Agni Purana 96 (mantra-vidhi: bīja, praṇava, japa context)
FAQs
It classifies specific syllabic groups (including hakāra and the trimātrā Praṇava) as functioning either as a hṛdaya-bīja (heart-seed) or, in certain applications, as the mūla-mantra (principal/root mantra) for ritual use such as japa and nyāsa.
By preserving a compact technical rule for mantra-structure—mapping phonetic syllable-sets to ritual roles (hṛdaya vs. mūla)—it demonstrates the Agni Purāṇa’s coverage of practical Tantric/Vaidika ritual technology alongside its many other disciplines.
Correct identification and deployment of the heart-seed or root-mantra is presented as enabling proper mantra-sādhana—supporting purification, steadiness of mind, and effective ritual invocation when performed according to rule.