Tithi-Nirṇaya for Vratas: Ekādaśī Rules, Saṅkrānti Punya-kāla, Eclipse Observances, and Prāyaścitta
द्वादश्यां विद्यते किंचिद्दशमीसंयुता यदि । दिनक्षये द्वितीयैव सर्वेषां परिकीर्तितां ॥ ४६ ॥
dvādaśyāṃ vidyate kiṃciddaśamīsaṃyutā yadi | dinakṣaye dvitīyaiva sarveṣāṃ parikīrtitāṃ || 46 ||
দ্বাদশীত যদি দশমীৰ সৈতে সামান্যও সংযোগ থাকে, তেন্তে দিনৰ অন্তত সকলোৰে বাবে কেৱল ‘দ্বিতীয়’টোৱেই (পাছৰ তিথি) ঘোষণা কৰা হৈছে।
Sanatkumara (in dialogue with Narada)
Vrata: Ekadashi (context: pāraṇā/selection around Dvādaśī)
Primary Rasa: shanta
Secondary Rasa: none
It teaches that vows (vratas) must be performed with correct tithi-judgment (nirṇaya); accuracy in timing preserves the sanctity and fruit of the observance.
By emphasizing precise observance of sacred days like Dvādaśī in alignment with the pañcāṅga, it supports disciplined Vishnu-bhakti where devotion is expressed through regulated vrata practice.
It reflects Jyotiṣa/Vedāṅga application—tithi conjunction (saṁyoga) and day-end (dina-kṣaya) rules used to decide the proper observance day in Narada Purana rituals.