Narada Purana — Purva Bhaga, Shloka 129
Jyotiṣa-saṅgraha: Varga-vibhāga, Bala-nirṇaya, Garbha-phala, Āyuḥ-gaṇanā
द्विसप्तांशे च मासादिलग्रायुर्जायते स्फुटम् । अशायुषी सलग्नानां खेटानामंशका हृताः ॥ १२९ ॥
dvisaptāṃśe ca māsādilagrāyurjāyate sphuṭam | aśāyuṣī salagnānāṃ kheṭānāmaṃśakā hṛtāḥ || 129 ||
Et dans le Dvi-saptāṁśa (la division au quatorzième), la longévité relative au mois et aux facteurs connexes, avec l’ascendant, se détermine clairement. Pour les ascendances dites « non porteuses de longévité » (aśāyuṣī), il faut retrancher les parts (aṁśa) attribuées aux planètes.
Sanatkumara (in instruction to Narada)
Vrata: none
Primary Rasa: shanta
Secondary Rasa: bhayanaka
FAQs
It shows that the Purana preserves Vedanga knowledge (Jyotisha) as a dharmic tool—life’s duration is treated as a measurable karmic framework, encouraging timely pursuit of dharma and moksha.
Indirectly: by clarifying lifespan calculations, it urges a devotee to prioritize sadhana and remembrance of the Divine within the time available, rather than postponing spiritual practice.
Vedanga Jyotisha: using the Dvi-saptāṁśa divisional scheme to compute month/ascendant-based longevity and applying a correction rule—subtracting planetary portions when the ascendant is classified as aśāyuṣī.