Every interpretation the app produces cites its classical source. This matters because the appṣa is a textual discipline: its authority rests not on individual opinion but on a continuous lineage of written sources stretching back at least two millennia. When a modern author describes a yoga or a dasha rule, the correct question is: from where does this claim originate?
The following are the six classical texts most commonly cited in working practice. The Vedic Astrology App's AI layer cross-references all of them when producing interpretations.
Bṛhat Parāśara Horā Śāstra (BPHS)
Attribution: Sage Parāśara, father of Vyāsa (author of the Mahābhārata). The classical dating is legendary — ritually considered pre-Vedic — but the compiled Sanskrit text we have dates from roughly the 7th–10th century CE.
Scope: 97 chapters covering chart casting, planetary positions, houses, aspects, yogas, divisionals, dashas, transits, remedies, and specialized topics like foreign travel and death-time analysis. It is the foundational text of modern the appṣa — most contemporary Vedic astrology manuals are reorganisations and summaries of BPHS.
Notable chapters: Ch.3 (planets), Ch.4 (ascendant), Ch.5 (houses), Ch.6 (divisionals — the canonical source for the Ṣoḍaśavarga rules), Ch.12 (yogas), Ch.36 (rāja yogas), Ch.42 (Vimshottari daśā), Ch.46 (daśā effects).
Phaladīpikā
Attribution: Mantreśvara, 14th century CE.
Scope: A compact, unusually precise distillation of the the appṣa corpus — roughly a third the length of BPHS but with denser information per verse. Particularly authoritative on yogas, longevity analysis (āyur dāya), and transit interpretation.
Why it matters: Where BPHS catalogues exhaustively, Phaladīpikā abstracts. When two classical texts disagree, Phaladīpikā is often cited as the arbiter because its formulations are cleaner and easier to apply. The second- most-frequent source in practical rule-application.
Sārāvalī
Attribution: Kalyāṇa Varma, approximately 10th century CE.
Scope: Fifty-five chapters focusing on planetary results in signs, houses, nakṣatras, and yogas. Predates BPHS in its standardization of many yoga formulations and is frequently the oldest clear source for a given rule.
Why it matters: Particularly valuable for rāśi-specific readings ("what does Mars in Leo mean specifically") and for the evolution of classical understanding of yogas before BPHS standardised the tradition.
Jaimini Sūtras
Attribution: Sage Jaimini, traditionally the founder of Mimāṃsā philosophy. Dating uncertain; the text we have is likely from the early centuries CE.
Scope: Compressed aphoristic sūtras introducing the Jaimini system — chara kārakas, ātmakāraka, arudha padas, chara daśā, argala, rāśi dṛṣṭi. The text is notoriously terse and has been the subject of extensive classical commentary (notably by Nīlakaṇṭha in the 16th century).
Why it matters: The foundational text of the parallel tradition to Parashari. Reading the appṣa without the Jaimini system is like reading physics without thermodynamics — possible, but you will miss whole domains of phenomena.
Uttara Kālāmṛta
Attribution: Kālidāsa — not the famous poet, but a different author of the same name writing on astrology. Date uncertain; likely 12th–14th century.
Scope: Deep treatment of kārakatva — what each planet signifies across domains. Where BPHS tells you what a planet does, Uttara Kālāmṛta tells you what a planet is in extraordinarily fine-grained enumeration.
Why it matters: The go-to reference for specific questions like "what body organs does Mars signify" or "what professions does Saturn rule." Essential for medical the appṣa and for vocational analysis.
Jātaka Pārijāta
Attribution: Vaidyanātha, 15th century CE.
Scope: Comprehensive natal astrology covering yogas, longevity methods, wealth analysis, and female nativities. Eighteen chapters. Strong on synthesis — integrating divisional charts, daśās, and shadbala into unified life-reading frameworks.
Why it matters: Classical treatment of female nativities (a domain under-addressed in older texts), systematic longevity methods (āyur dāyatechniques beyond those in BPHS), and one of the most thorough classical yoga catalogues.
Secondary but significant
Bṛhat Jātaka
Varāhamihira, 6th century CE. Pre-Islamic Hindu classical astrology at its peak. Dense, technical, and widely cited for Greek-Hindu synthesis-era formulations. Not as operationally applied today as BPHS but essential for historical understanding.
Bṛhat Saṃhitā
Varāhamihira, same period. Mundane astrology (weather, omens, political events), gemology, architecture. Not used for individual horā but definitive for its branch.
Muhūrta Cintāmaṇi
Rāma Daivajña, 16th century CE. The classical authority on electional astrology — choosing auspicious moments for undertakings. Drawn on for muhūrta recommendations.
Praśna Mārga
17th century CE, Kerala tradition. Classical horary astrology — answering specific questions from the chart of the moment the question is asked. Specialised but essential for the horary branch.
How to use these sources
You do not have to read these texts in Sanskrit to benefit from them. Competent English translations exist for all of the above — R. Santhanam (BPHS, Phaladīpikā, Sārāvalī, Uttara Kālāmṛta, Jātaka Pārijāta), Sitaram Jha (Jaimini Sūtras). Cross-reference any modern claim with a translated verse number; if the modern author cannot provide one, treat the claim as opinion.
The Vedic Astrology App's AI interpretations are wired to the classical record. Every recommendation cites a text; every citation can be checked. This is not a retrieval trick — it is the discipline of the source tradition, preserved.