Jyotiṣa-saṅgraha: Varga-vibhāga, Bala-nirṇaya, Garbha-phala, Āyuḥ-gaṇanā
लग्नाधिपे बलयुतशीत्यब्दं त्वायुरीरितम् । सवीर्ये सत्सु केंद्रेषु त्रिंशच्छुद्धियुतेऽष्टमे ॥ ११४ ॥
lagnādhipe balayutaśītyabdaṃ tvāyurīritam | savīrye satsu keṃdreṣu triṃśacchuddhiyute'ṣṭame || 114 ||
ലഗ്നാധിപൻ ബലയുക്തനായാൽ ആയുസ്സ് എൺപത് വർഷമെന്ന് പറയുന്നു. അവൻ വീര്യവാനായി കേന്ദ്രസ്ഥാനങ്ങളിൽ നിലകൊള്ളുകയും, അഷ്ടമഭാവം ത്രിംശത്-ശുദ്ധി (ബലമാനം/ശുദ്ധത) യുക്തമാകുകയും ചെയ്താൽ, പൂർണ്ണായുസ്സ് സൂചിപ്പിക്കുന്നു।
Sanatkumara (teaching Narada in a Vedanga/Jyotisha context)
Vrata: none
Primary Rasa: shanta
Secondary Rasa: none
It frames Jyotiṣa as a Vedāṅga tool: by understanding longevity indicators (āyurdaya), one is urged to prioritize dharma and mokṣa-oriented living within the known limits of human life.
Indirectly: by indicating a stable, full lifespan when the lagna lord and key houses are strong, it supports the idea of using favorable embodied life for sustained sādhana—especially steady devotion and disciplined practice.
Vedāṅga Jyotiṣa—specifically āyurdaya calculation: strength of the lagna lord, kendra placement, and an eighth-house strength/purity metric (triṃśacchuddhi) used to judge the span of life.