Chandas: Varṇa-gaṇas, Guru-Laghu, Vṛtta-bheda, and Prastāra Procedures
उद्दिष्टांकसमाहारः सैको वा जनयेदिमाम् । संख्यैव द्विगुणैकोना सद्भिरध्वा प्रकीर्तितः ॥ २० ॥
uddiṣṭāṃkasamāhāraḥ saiko vā janayedimām | saṃkhyaiva dviguṇaikonā sadbhiradhvā prakīrtitaḥ || 20 ||
Tổng số thu được khi cộng các chữ số đã nêu—hoặc chính tổng ấy, hoặc tổng ấy cộng thêm một—sẽ sinh ra kết quả này. Người trí nói rằng ‘adhvan’ chính là con số kém hơn hai lần saṃkhyā một đơn vị.
Sanatkumara (teaching Narada in a technical section)
Vrata: none
Primary Rasa: shanta
Secondary Rasa: adbhuta
It shows that the Purana also preserves disciplined, rule-based knowledge: clear definitions and exact relations (like adhvan in terms of saṃkhyā) support dharma and right understanding, which ultimately steady the mind for mokṣa-oriented inquiry.
This verse is not directly a bhakti instruction; it models śāstric clarity—precise learning and correct transmission—which in the Narada Purana context complements devotion by preventing confusion in practice and study.
A technical, computation-like rule is stated: adhvan is defined as ‘one less than twice the saṃkhyā,’ and a method is given using the sum of indicated digits (with an optional +1), reflecting the Purana’s preservation of structured, Vedāṅga-adjacent numerical reasoning.