Phaladeepika is one of the most important texts on Vedic astrology, written by Mantreshwara, a 13th-century astrologer from Tamil Nadu. The word Phaladeepika means "a lamp of results", and the book covers various topics such as planetary significations, house significations, yogas, dasas, transits, vargas, and more. The book is divided into 28 chapters and contains 865 verses.
Phaladeepika is considered as one of the best sources of learning Vedic astrology, as it is concise, clear, and comprehensive. It is based on the teachings of earlier authorities such as Parashara, Jaimini, Varahamihira, and Yavana. It also incorporates some original contributions by Mantreshwara, such as the concept of shadbala (six-fold planetary strength), the use of special ascendants (such as hora lagna and ghati lagna), and the delineation of various yogas.
Phaladeepika has been translated into many languages, including English, Hindi, Telugu, Kannada, Malayalam, and Tamil. The Tamil translation was done by V. Subrahmanya Sastri, a scholar and astrologer who lived in the 19th and 20th centuries. He also translated other classics such as Brihat Jataka, Saravali, and Prashna Marga. His translation of Phaladeepika is available online as a PDF file for free download.
If you are interested in learning Vedic astrology from a classic text, you can download the Phaladeepika in Tamil PDF file from the following link: [^1^]. You can also read other translations and commentaries on Phaladeepika from various sources. Phaladeepika is a treasure trove of astrological wisdom that can enlighten you about your past, present, and future.
Shadbala is a concept from Vedic astrology that helps us understand the total strength of a planet in our chart. Shadbala can be literally split into two words, i.e. Shad and Bala. Shad means six and Bala means strength. So, Shadbala actually means six-fold or six-part strength of planets.
Why do we need to know the strength of planets? Because the effects of a planet, whether auspicious or inauspicious, will be in proportion to its strength. A weak planet may not be able to give its full results, while a strong planet may have more impact on our life. Therefore, Shadbala is an important tool for assessing the quality and quantity of planetary influences.
How do we calculate Shadbala? There are six main criteria for assessing a planet's strength, namely: Sthanabala, Digbala, Kalabala, Chestabala, Naisargikabala, and Drikbala. Each of these criteria has sub-components and formulas that are used to assign points or Shashtiamsas to each planet. The total points or Shashtiamsas of a planet are its Shadbala.
Sthanabala is the positional strength of a planet based on its placement in a sign, house, drekkana, and varga. The five components of Sthanabala are Uchabala, Saptavargaja Bala, Ojayugma Bala, Kendradi Bala, and Drekkana Bala.