Narada Purana — Purva Bhaga, Shloka 125
Jyotiṣa-śāstra Saṅgraha: Threefold Division, Gaṇita Methods, Muhūrta, and Planetary Reckoning
अर्कोनचंद्रलिप्तास्तु तिथयो भोगभाजिताः । गतगम्याश्च षष्टिघ्ना नाऽतोभुक्ततरोद्धृताः ॥ १२५ ॥
arkonacaṃdraliptāstu tithayo bhogabhājitāḥ | gatagamyāśca ṣaṣṭighnā nā'tobhuktataroddhṛtāḥ || 125 ||
تُستخرج التِّثي (الأيام القمرية) من طولَي الشمس والقمر؛ وبالقسمة على «البهوغا» (القوس المقطوع) تُعرَف حصصها. ثم تُضرَب الحصة المنقضية والباقية في ستين (لاستخراج الكَلا)، وتُستخرج بحسب ما قد تمّ التمتّع به وما بقي للتمتّع.
Sanatkumara (in instruction to Narada on technical calculation within Moksha Dharma context)
Vrata: none
Primary Rasa: shanta
Secondary Rasa: none
FAQs
It emphasizes that dharma and vrata observance should be aligned with accurate sacred time (kāla), since correct tithi-determination supports disciplined practice leading toward moksha.
Bhakti practices like pūjā, upavāsa, and vrata depend on proper timing; this verse supplies the technical basis for fixing tithis so devotional acts are performed at the intended sacred moments.
Jyotiṣa Vedāṅga: computing tithi from solar and lunar longitudes, and converting elapsed/remaining portions into kalās by multiplying by sixty for ritual-time precision.