Jyotiṣa-saṅgraha: Varga-vibhāga, Bala-nirṇaya, Garbha-phala, Āyuḥ-gaṇanā
आयुरंशकलाभक्ताद्विंशत्याब्दा इनाहतम् । शेषं द्विशतभक्तं स्युर्मासाः शेषा दिनादिकम् ॥ १३३ ॥
āyuraṃśakalābhaktādviṃśatyābdā ināhatam | śeṣaṃ dviśatabhaktaṃ syurmāsāḥ śeṣā dinādikam || 133 ||
आयुष्याचे अंश-कलांमध्ये भाग करून जो भागफल मिळेल, तो वीसने गुणिला असता वर्षांची संख्या होते. उरलेला शेष दोनशेने भागिला असता भागफल महिने, आणि पुढील शेष दिवसादि (सूक्ष्म मान) होतो॥१३३॥
Sanatkumara (in instruction to Narada, within a technical/vedāṅga-style exposition)
Vrata: none
Primary Rasa: shanta
Secondary Rasa: none
It frames time and lifespan as measurable and orderly through dharmic knowledge, supporting disciplined living and right timing (kāla) for duties and spiritual practice.
Indirectly: by teaching precise reckoning of time, it helps a devotee maintain regular vrata, japa, and pūjā schedules—devotion becomes steady when aligned with proper kāla-nirṇaya.
Vedāṅga Jyotiṣa-style computation: using multiplication and division with quotient/remainder to convert a derived lifespan measure into years, months, and days (a procedural rule for kāla/āyus calculation).