Narada Purana — Purva Bhaga, Shloka 28
Jyotiṣa-śāstra Saṅgraha: Threefold Division, Gaṇita Methods, Muhūrta, and Planetary Reckoning
छेदं गुणं गुणं छेदं वर्गं मूलं पदं कृतिम् । ऋणं स्वं स्वमृणं कुर्यादृश्ये राशिप्रसिद्धये ॥ २८ ॥
chedaṃ guṇaṃ guṇaṃ chedaṃ vargaṃ mūlaṃ padaṃ kṛtim | ṛṇaṃ svaṃ svamṛṇaṃ kuryādṛśye rāśiprasiddhaye || 28 ||
Чтобы результат стал явным и величина утвердилась ясно: считай деление умножением, а умножение — делением; своди квадрат к корню, а корень обращай в квадрат; понижай степень до основания, а основание возводи в степень; и делай отрицательное положительным, а положительное — отрицательным.
Sanatkumara (in dialogue instructing Narada on technical/practical knowledge supportive of dharma and clarity of understanding)
Vrata: none
Primary Rasa: shanta
Secondary Rasa: adbhuta
FAQs
It emphasizes clarity (prasiddhi) and demonstrability in knowledge: disciplined, error-free understanding—whether in calculation or contemplation—supports dharma and steadies the mind for moksha-oriented living.
Indirectly: bhakti thrives on right understanding and steadiness; the verse models how confusion is removed through correct method—similarly, devotion becomes firm when one applies proper discipline and clears doubts.
A technical, ganita-like rule-set: using inverse operations (division ↔ multiplication), transforming squares and roots, handling powers and bases, and managing positive/negative values to verify a numerical result.