Tithi-Nirṇaya for Vratas: Ekādaśī Rules, Saṅkrānti Punya-kāla, Eclipse Observances, and Prāyaścitta
उपोष्या द्वादशी शुद्धा सर्वैरेव न संशयः । केचिदाहुश्च पूर्वां तु तन्मतं न समंजसम् ॥ ५४ ॥
upoṣyā dvādaśī śuddhā sarvaireva na saṃśayaḥ | kecidāhuśca pūrvāṃ tu tanmataṃ na samaṃjasam || 54 ||
清净的十二日(Dvādaśī)确应作为斋戒之日——对此诸家权威皆无疑惑。只是有人说应取前一日;但此见并不相应、不够圆满。
Sage Narada (teaching in a vrata/ritual context)
Vrata: Ekadashi (contextual; Dvādaśī fasting rule)
Primary Rasa: shanta
Secondary Rasa: vira
It stresses correct observance of the Vaiṣṇava vow by insisting on śuddha Dvādaśī for fasting, implying that dharma is protected by precise adherence to proper tithi.
By prioritizing the properly determined Dvādaśī fast, it frames devotion as disciplined worship—bhakti expressed through accurate vrata practice rather than personal preference.
It reflects calendrical/tithi determination used in ritual decision-making (a practical application aligned with Jyotiṣa-style timekeeping for vrata observance).