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 ||
Khi vào lúc aruṇodaya (rạng đông) thấy tithi Ekādaśī bị pha lẫn với Daśamī, thì nên gác Ekādaśī ấy lại và giữ chay vào Dvādaśī.
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.