Brihat Parashar Hora Shastra gives following combinations for long life:
1. If owner of the eighth house is in an angle the individual will have long life.
2. If the owner of the sixth house is in twelfth long life should be predicted.
3. If owner of the sixth house is in the sixth and owner of the twelfth is in the twelfth long life should be predicted.
4. Long life should be predicted if owner of the sixth house and owner of the twelfth are in the ascendant and twelfth.
5. The individual will be long lived when the owner of the ascendant is exalted, the Moon is in the eleventh house and Jupiter is in the eighth.
6. The individual will be wealthy and long lived when the owner of the ascendant is very strong and has aspect of a naturally beneficial planet from an angle.
7. The individual will have long life if the owners of the ascendant, fifth and eighth are in their own signs, friendly signs or own navamshas.
8. Owners of the ascendant, eighth, tenth and Saturn in angles, triangles or the eleventh will give long life
Phaladeepika gives the following combinations for long life:
1.The individual will have long life when a naturally beneficial planet is in an angle, and the owner of the ascendant is associated with or has aspect of a naturally beneficial planet.
2. The Individual will have long life when the owner of the ascendant is in an angle associated with or receiving aspect from Jupiter and Venus.
3. The individual will have long life when Saturn or the owner of the ascendant is associated with an exalted planet.
4. The individual will have long life when naturally malefic planets are placed in the third, sixth, and eleventh houses from the ascendant and naturally beneficial planets occupy angles.
5. The individual will have long life when the sixth, seventh and eighth houses from the ascendant have naturally beneficial planets whereas the third and eleventh have naturally malefic planets.
6. The individual will have long life when the owner of the tenth house is exalted and a naturally malefic planet is placed in the eighth house.
7. The individual will have long life when the ascendant has a common sign, and its owner is either in an angle or triangle or it is exalted.
8. The individual will have long life when the ascendant has a common sign and there are two naturally malefic planets in an angle from the owner of the ascendant.
9. The individual will have long, medium, or short life when the stronger of the owner of the ascendant and owner of the eighth is placed in an angle, succedent, or cadent house.
10. The individual will have long, medium, or short life depending on the relationship that the owner of the ascendant has with the Sun. Life will be long if the owner of the ascendant is friendly with the Sun, medium if the relationship is neutral and short if inimical
