Jataka Alankara · by Ganesha Daivajna
Chapter 5 · Length of Life
आयुर्दायाध्यायः
वागीशेहीनवीर्येव्ययतनुजगतेयामिनीशेखशैलाधर्मेसर्वैःपरायुःखगखललवगैःकेंद्रयातैरशीतिः ॥क्रूरैःक्रूरर्क्षयातैःशुभभवनगतैःसौम्यखेटैःसवीर्यैर्लग्नेशेस्यात्परायुःसुतभवनगतैःषष्टिरायुर्नराणाम् ॥ १७ ॥
Going on: Jupiter is weak, and the Moon is in the 12th or 5th house. Then life is 70 years. All planets are in the 9th house. Then life is the highest. Planets in corner houses sit in bad planets' navamsha (one-ninth part of a sign). Then life is 80 years. Bad planets are in bad planets' signs. Good planets are strong in good planets' signs. The lord of the 1st house is strong. Then life is the highest. If those good planets are in the 5th house, life is 60 years.
Simple meaning: All planets in the 9th give the highest life. A weak Jupiter with the Moon badly placed gives 70.
सारंगस्यांत्यभागेयदिवपुषिगतेचाद्यभागेचकेंद्रेसौम्यैःखेटैःशतंस्याद्वसुसहजसुखेस्याच्चिरायुःसमस्तैः ॥
Good planets in corner houses with Capricorn rising give 100 years. A badly placed 8th lord may give 28.
क्षीणेप्रालेयभानौयदिखलखचरोमृत्युगोमृत्युनाथःकेंद्रस्थोलग्ननाथोनिजबलरहितःखाश्वितुल्यंतदायुः ॥
A waning Moon, a bad planet in the 8th and a weak 1st lord may give 20 years.
हीनौस्वर्भानुनावायदिहिममहसाव्योमनेत्रप्रमाणंकेंद्रस्थौसूर्यमंदौयदिवपुषिकुजःपुष्पबाणांकुशंस्यात् ॥
Some rules here give 20 years. Others warn of a risk of a very short life.