Tithi-Nirṇaya for Vratas: Ekādaśī Rules, Saṅkrānti Punya-kāla, Eclipse Observances, and Prāyaścitta
द्वादश्यां तु कलायां वा यदि लभ्येत पारणा । तदानीं दशमीविद्धाप्युपोष्यैकादशी तिथिः ॥ ४४ ॥
dvādaśyāṃ tu kalāyāṃ vā yadi labhyeta pāraṇā | tadānīṃ daśamīviddhāpyupoṣyaikādaśī tithiḥ || 44 ||
然而,若能在十二日(Dvādaśī)行破斋(pāraṇā)——哪怕只得其极微一分——则当时应守持爱迦达希之斋戒,即便该爱迦达希被第十日(Daśamī)所“穿插重叠”。
Nārada (teaching the Sanatkumāra tradition on vrata-vidhi)
Vrata: Ekadashi
Primary Rasa: shanta
Secondary Rasa: bhakti
It prioritizes correct completion of the Ekādaśī-vrata: if pāraṇā can be done on Dvādaśī (even briefly), one should still fast on Ekādaśī, protecting the sanctity and fruit of the vow.
By stressing careful observance of Ekādaśī and proper pāraṇā, it frames devotion as disciplined service (sevā) expressed through time-honored Vaiṣṇava vrata practice.
It reflects Jyotiṣa/Vedic calendrics applied to ritual: using tithi fractions (kalā) and ‘viddha’ overlap rules to decide the correct fasting day and the proper window for pāraṇā.