Narada Purana — Purva Bhaga, Shloka 76
The Narration of the Trayodaśī Vow Observed Throughout the Twelve Months
तत्र स्नानं जपो होमो दानं चानंत्यमश्नुते । फाल्गुने तु सिते पक्षे त्रयोदश्यामुपोषितः ॥ ७५ ॥
tatra snānaṃ japo homo dānaṃ cānaṃtyamaśnute | phālgune tu site pakṣe trayodaśyāmupoṣitaḥ || 75 ||
その地においては、沐浴、真言の誦持（ジャパ）、火供（ホーマ）、そして布施（ダーナ）が不滅の功徳をもたらす。ファールグナ月の白分に、十三日（トラヨーダシー）を斎戒して過ごす者は、その確かな果報を得る。
Narada (teaching in a dialogic Purana setting; commonly framed as Narada instructing sages such as Sanatkumara and others)
Vrata: Trayodaśī-upavāsa (within a broader vrata context)
Primary Rasa: bhakti
Secondary Rasa: shanta
FAQs
It teaches that core dharmic acts—snāna, japa, homa, and dāna—performed in the prescribed sacred setting/time generate “anantya,” i.e., imperishable spiritual merit.
By highlighting japa and vrata (fasting) as disciplined devotional practices, it frames devotion as sustained worship through mantra, purity (snāna), offering (homa), and selfless giving (dāna).
It uses tithi-based timing (Trayodaśī in Phālguna, bright fortnight), reflecting Jyotiṣa/Vedāṅga-style calendrical discipline applied to vrata and ritual efficacy.