Jyotiṣa-śāstra Saṅgraha: Threefold Division, Gaṇita Methods, Muhūrta, and Planetary Reckoning
शंकुमानांगुलाभ्यस्ते भुजत्रिज्ये यथांक्रमम् । कोटीज्ययाविभज्याप्ते छायाकर्माबहिर्द्दले ॥ १४० ॥
śaṃkumānāṃgulābhyaste bhujatrijye yathāṃkramam | koṭījyayāvibhajyāpte chāyākarmābahirddale || 140 ||
Cuando la bhujā (base) y la trijyā (radio/hipotenusa) se multiplican sucesivamente por la medida del śaṅku (gnomon) expresada en aṅgulas, y los productos se dividen por la koṭi-jyā, el valor obtenido debe aplicarse en el paso externo del procedimiento de cálculo de la sombra (chāyā-karma).
Narada (within a technical exposition on computation/measurement)
Vrata: none
Primary Rasa: shanta
Secondary Rasa: none
It highlights that dharma and mokṣa-oriented life in the Purāṇic tradition is supported by precise Vedic sciences—accurate measurement (pramāṇa) and time-knowledge (Jyotiṣa) safeguard correct observance of rites and disciplines.
Indirectly: by teaching reliable methods for determining time and related calculations, it supports properly timed worship, vrata observance, and ritual discipline—practical foundations that steady devotional practice.
Vedāṅga Jyotiṣa and gaṇita-style computation: a rule using śaṅku (gnomon), aṅgula units, and triangle components (bhujā, koṭi-jyā, trijyā) for chāyā-karma (shadow calculation).