Narada Purana — Purva Bhaga, Shloka 105
Jyotiṣa-śāstra Saṅgraha: Threefold Division, Gaṇita Methods, Muhūrta, and Planetary Reckoning
खर्तुदस्नाविपद्वेदाः शीघ्नकर्मणि कीर्तिताः । ओजयुग्मांतरगुणाभुजज्यात्रिज्ययोद्धृताः ॥ १०५ ॥
khartudasnāvipadvedāḥ śīghnakarmaṇi kīrtitāḥ | ojayugmāṃtaraguṇābhujajyātrijyayoddhṛtāḥ || 105 ||
Os termos védicos de caráter técnico—como khartu, dasnā e vipad—são declarados em conexão com as regras do cálculo rápido. Eles são derivados tomando-se os fatores intermediários do par de “ojas” (termos ímpares) e empregando as medidas chamadas bhuja-jyā e tri-jyā (o seno e o tri-seno).
Sanatkumara (teaching Narada)
Vrata: none
Primary Rasa: shanta
Secondary Rasa: none
FAQs
It shows that the Purana preserves not only devotion and dharma, but also precise Vedanga knowledge—especially Jyotisha—supporting correct timing and understanding of Vedic practice.
Indirectly: by grounding ritual timing and sacred observances in accurate Jyotisha computation, it supports disciplined worship—an aid to steady Vishnu-bhakti even when the verse itself is technical.
Vedanga Jyotisha and computational astronomy/ganita—specifically ‘swift computation’ methods and trigonometric measures like bhuja-jyā (sine) and tri-jyā used to derive intermediate factors.