Narada Purana — Purva Bhaga, Shloka 51
The Explanation of the Twelve-Month Caturthī Vrata
विद्यते भुवनेष्वन्यत्तस्मान्नित्यमिति स्थितिः । ऊर्ज्जशुक्लचतुर्थ्यां तु नागव्रतमुदाहृतम् ॥ ५१ ॥
vidyate bhuvaneṣvanyattasmānnityamiti sthitiḥ | ūrjjaśuklacaturthyāṃ tu nāgavratamudāhṛtam || 51 ||
諸世界において、真に久住するものは他にない。ゆえに人は永遠なるものに安住すべきである。かくして、ウールジャ月（Ūrja）の白分第四日（チャトゥルティー）に「ナーガ・ヴラタ」と名づける誓戒が説き定められる。
Narada (teaching within a vrata/observance context; framed in the Narada–Sanatkumara dialogue tradition)
Vrata: Nāga-vrata
Primary Rasa: shanta
Secondary Rasa: bhakti
FAQs
It contrasts the impermanence of worldly existence with the need to be established in the eternal (nitya), then links that orientation to a concrete discipline: observing Nāga-vrata on an auspicious tithi.
By directing the practitioner away from transient goals and toward steadiness in the eternal, it frames vrata as a devotional instrument—regular observance that trains remembrance, restraint, and reverence.
Calendar/ritual timing (tithi and lunar fortnight) is emphasized: the vow is specifically fixed on Ūrja month’s Śukla Caturthī, reflecting applied jyotiṣa-style timekeeping for dharmic rites.