Jyotiṣa-śāstra Saṅgraha: Threefold Division, Gaṇita Methods, Muhūrta, and Planetary Reckoning
विंशकुदीपौच्चगुणाच्छाया शंकूद्धृता भवेत् । दीपशंक्वंतरं चाथ च्छायाग्रविवरघ्नभा ॥ ५८ ॥
viṃśakudīpauccaguṇācchāyā śaṃkūddhṛtā bhavet | dīpaśaṃkvaṃtaraṃ cātha cchāyāgravivaraghnabhā || 58 ||
Bóng đo bằng śaṅku (gnomon) nên lấy bằng hai mươi lần chiều cao của đèn. Rồi khoảng cách giữa đèn và śaṅku được xác định theo (ánh sáng đã tính) để triệt tiêu khoảng hở cho đến tận mũi bóng.
Narada (in instructional mode within a technical/observational passage)
Vrata: none
Primary Rasa: shanta
Secondary Rasa: adbhuta
It highlights that dharma is supported by pramāṇa (reliable measurement): correct observation and calculation are treated as aids to right practice and disciplined living.
Indirectly: by emphasizing precision and order, it supports well-performed religious observances; in Purāṇic practice, careful method strengthens sincerity and steadiness in worship.
Vedāṅga Jyotiṣa-style applied measurement using a śaṅku (gnomon) and shadow-length relationships—useful for observational calculations connected with timing and spatial determination.