Brihat Parashara Hora Shastra: an overview
The Brihat Parashara Hora Shastra is one of the most cited texts of Jyotish, traditionally attributed to the sage Parashara. It covers the grahas, houses, dashas and yogas of the Parashari system.
What it is
The text is a large work in many chapters. Its date is debated and the present text is generally thought to have been compiled over time, so the attribution is traditional rather than a settled historical claim.
How it is worked out or read
The Parashari system used on this site, including the Vimshottari dasha and whole-sign houses, is described in this text and in later works. The site cites the system, not a particular chapter, until the edition is verified.
Where it appears on this site
The Parashari framework is in the Vimshottari article and the yoga article.
The foundational text
The Brihat Parashara Hora Shastra, often shortened to BPHS, is the text most practitioners regard as the foundation of the Parashari system of chart reading. It is framed as a dialogue in which the sage Parashara instructs his disciple Maitreya. Almost every standard technique in modern Indian astrology, from the house significations and planetary dignities to the Vimshottari dasha and the divisional charts, is set out or referred to in it.
Questions of date and text
The traditional attribution to the ancient sage Parashara is a matter of faith rather than documented history. The text as it is printed today rests on manuscripts and editions of comparatively recent centuries, and scholars generally regard it as compiled and expanded over a long period. Different printed editions differ in the number and order of chapters and in some verses. A reader quoting the text should name the edition used, since chapter and verse numbers are not consistent across them.
What it covers
The common editions run to nearly a hundred chapters. They begin with creation and the nature of the grahas and rashis, then cover the sixteen divisional charts, the houses and their lords, aspects, the karakas, the effects of each house lord in each house, a very large number of yogas, longevity, many dasha systems with Vimshottari foremost among them, ashtakavarga, and remedial measures for difficult planetary periods. Its range is what makes it the standard reference.
Translations
Several English translations are in wide use, including those by R. Santhanam and by Girish Chand Sharma, and there are Hindi translations with commentary. They differ in edition and in interpretation of difficult passages. Many students read one translation through and consult another where a passage is unclear.
Reading it well
BPHS is long, and reading it straight through is a large undertaking. A practical approach is to read the chapters on the grahas, the rashis and the houses first, then the chapter on the effects of house lords, using one's own chart as a running example. The yoga and dasha chapters make most sense once those foundations are in place. Throughout, it helps to remember that the text records a tradition; it is a guide to how Jyotish reads a chart, not a set of guaranteed outcomes.