Narada Purana — Purva Bhaga, Shloka 1
Tithi-Nirṇaya for Vratas: Ekādaśī Rules, Saṅkrānti Punya-kāla, Eclipse Observances, and Prāyaścitta
सनक उवाच । तिथीनां निर्णयं वक्ष्ये प्राचश्चित्तविधिं तथा । श्रृणुष्व तन्मुनिश्रेष्ठ कर्मसिद्धिर्यतो भवेत् ॥ १ ॥
sanaka uvāca | tithīnāṃ nirṇayaṃ vakṣye prācaścittavidhiṃ tathā | śrṛṇuṣva tanmuniśreṣṭha karmasiddhiryato bhavet || 1 ||
萨那迦说道：我将宣说诸提提（tithi，月日）的判定，也将讲述普罗耶施吉多（prāyaścitta，忏悔赎罪）之法。请聆听，噢最胜牟尼——由此诸仪轨得以圆满成就。
Sanaka
Vrata: none
Primary Rasa: shanta
Secondary Rasa: none
FAQs
It frames ritual life as spiritually effective only when grounded in correct dharma—right timing (tithi) and purification through prāyaścitta—so that actions become truly fruitful (karma-siddhi).
While not directly teaching bhakti, it supports devotional practice by insisting that vows and worship become effective when performed on the proper tithis and with expiations that remove obstacles to sincere devotion.
It highlights calendrical/astronomical computation used for tithi-nirṇaya (a Jyotiṣa-oriented discipline) and the ritual jurisprudence of prāyaścitta—both essential for correctly executing Vedic and Purāṇic rites.