ஆயுள் - பிருஹத் பராசர ஹோர சாஸ்திரம்

1. O Maharishi Parashar, you have dealt with combinations for wealth and poverty. Kindly detail methods of ascertaining the life-span of human beings.

2-3. O Brahmin, for the benefit of mankind I narrate methods of ascertaining longevity. Knowing that longevity is difficult even for gods. Many exponents have laid down various methods of longevity calculations. Following is the summary of such schools of thought.

4-8. Pindayu. The Grahas contribute to longevity, according to their being in exaltation, or debilitation and also based on their strengths and weaknesses and positions in Ashvini etc. and in the various Rasis. First of all Pindayu is based on the positions of the Grahas. O Brahmin, listen carefully to what I say: 19, 25, 15, 12, 15, 21 and 20 are the number of years, contributed by the Grahas, from Surya etc., when in exaltation. These are half of the above in debilitation. And, if the Grahas are in between exaltation and debilitation, the rule of three process should be used. Deduct the actual position of the Grah from its deep exaltation point. If the product is less than 6 Rasis, deduct it again from 12 Rasis. The product concerned should be multiplied by the number of years allotted to the Grah and divided by 12 to get the Grah’s actual contribution.