The Exposition of the Dvādaśī Vow for the Twelve Months
Dvādaśī-vrata-nirṇaya and Mahā-dvādaśī Lakṣaṇas
यदारुणोदये विद्धा दशम्यैकादशी तिथिः । तदा तां संपरित्यज्य द्वादशीं समुपोषयेत् ॥ ९८ ॥
yadāruṇodaye viddhā daśamyaikādaśī tithiḥ | tadā tāṃ saṃparityajya dvādaśīṃ samupoṣayet || 98 ||
அருணோதயத்தில் ஏகாதசி திதி தசமியுடன் கலந்ததாக இருந்தால், அந்த ஏகாதசியை விட்டு த்வாதசியிலேயே உபவாசம் செய்ய வேண்டும்।
Sanatkumara (in dialogue instructing Narada)
Vrata: Ekādaśī/Dvādaśī vrata (Mahā-dvādaśī decision rule)
Primary Rasa: shanta (peace)
Secondary Rasa: none
It emphasizes purity and correctness in vrata observance: if Ekādaśī is tainted by Daśamī at aruṇodaya, the devotee should shift the fast to Dvādaśī so the vow remains spiritually effective and dharmically valid.
By prescribing careful observance of Ekādaśī-related discipline, it frames bhakti as devotion expressed through regulated worship and self-restraint—protecting the sanctity of a Viṣṇu-oriented vrata through proper timing.
It highlights calendrical decision-making tied to tithi at aruṇodaya—an applied aspect of Jyotiṣa (Vedāṅga astrology) used in Panchāṅga-based ritual timing for vrata observance.