Jyotiṣa-śāstra Saṅgraha: Threefold Division, Gaṇita Methods, Muhūrta, and Planetary Reckoning
चापोननिघ्नः परिधिः प्रगङ्लः परिधेः कृते । तुर्यांशेन शरध्नेनाघेनिनाधं चतुर्गणम् ॥ ४९ ॥
cāponanighnaḥ paridhiḥ pragaṅlaḥ paridheḥ kṛte | turyāṃśena śaradhnenāgheninādhaṃ caturgaṇam || 49 ||
Chu vi (paridhi) được xác định bằng cách nhân đường kính với hệ số đã định. Khi tính chu vi, hãy áp dụng phép hiệu chỉnh một phần tư theo quy tắc tính toán đã nêu, lập thành phép toán bốn bước (caturgaṇa).
Sanatkumara (teaching Narada in a technical/śāstric mode within Mokṣa-dharma context)
Vrata: none
Primary Rasa: shanta
Secondary Rasa: adbhuta
It highlights that dharmic life (and the pursuit of mokṣa) is supported by śāstric precision—accurate measures and correct procedures are part of disciplined living, not separate from spirituality.
Indirectly: it shows that devotion is strengthened when worship and observances are performed with proper knowledge and exactness, aligning practice with śāstra rather than guesswork.
A computational/measurement rule akin to Vedāṅga Jyotiṣa and traditional gaṇita—using coefficients and stepwise operations (caturgaṇa) to derive values like circumference for practical applications.