Tithi-vicara
Determination of Tithi for Fasts, Parana, and Pitri Rites
उपवासदिनं विद्धं यदा भवति पूर्वया । द्वितीयेऽह्नि यदा न स्यात्स्वल्पाप्येकादशी तिथिः ॥ २७ ॥
upavāsadinaṃ viddhaṃ yadā bhavati pūrvayā | dvitīye'hni yadā na syātsvalpāpyekādaśī tithiḥ || 27 ||
ଯେତେବେଳେ ଉପବାସ ଦିନ ପୂର୍ବତିଥି ଦ୍ୱାରା ବିଦ୍ଧ ହୁଏ, ଏବଂ ପରଦିନ ଏକାଦଶୀ ତିଥିର ସାନା ଅଂଶ ମଧ୍ୟ ନଥାଏ, ସେତେବେଳେ ସେ ଉପବାସଦିନକୁ ବିଦ୍ଧ (ଦୋଷଯୁକ୍ତ) ବୋଲି ଜାଣିବା ଉଚିତ।
Sanatkumara (in dialogue with Narada)
Vrata: Ekādaśī upavāsa (fasting day determination)
Rasa: {"primary_rasa":"shanta","secondary_rasa":"none","emotional_journey":"Precise definitional teaching: it identifies when the upavāsa-day becomes defective (viddha) and clarifies the decisive criterion of Ekādaśī’s absence on the next day."}
It teaches that Ekādaśī fasting must align correctly with the Ekādaśī tithi; a ‘viddha’ (pierced) day weakens the vrata’s intended dharmic and devotional merit.
By insisting on proper Ekādaśī timing, it frames bhakti as disciplined worship—devotion expressed through accurate observance of Viṣṇu-oriented vrata rules rather than mere intention alone.
Vedāṅga Jyotiṣa (calendar/time-reckoning): the rule concerns tithi-overlap and the presence/absence of Ekādaśī portions across two days to decide the correct upavāsa day.