Tithi-vicara
Determination of Tithi for Fasts, Parana, and Pitri Rites
आदित्योदयवेलायां यास्तोकापि तिथिर्भवेत् । पूर्वविद्धा तु मंतव्या प्रभूता नोदयं विना ॥ १४ ॥
ādityodayavelāyāṃ yāstokāpi tithirbhavet | pūrvaviddhā tu maṃtavyā prabhūtā nodayaṃ vinā || 14 ||
Au moment du lever du soleil, quel que soit le tithi présent—ne fût‑ce qu’un bref instant—il doit être tenu pour pūrvaviddhā, «déjà commencé». Mais un tithi, si étendu soit‑il, qui ne touche pas l’aurore, ne doit pas être considéré comme valable pour l’observance du jour.
Sanatkumara (teaching Narada the rule of tithi for observances)
Vrata: none (general rule applicable to vratas)
Primary Rasa: shanta
Secondary Rasa: adbhuta
It teaches kāla-śuddhi (purity of timing): vows and rites gain full merit when aligned with the tithi that is connected to sunrise, ensuring disciplined and scripturally grounded observance.
Bhakti is supported by niyama (regulated practice): even devotion-centered vratas must be performed at the proper tithi, and the verse gives a clear rule—accept the tithi that touches sunrise.
It reflects Jyotiṣa/Vedāṅga-based calendrical determination: tithi is operationally taken from sunrise contact (pūrvaviddhā), not merely by duration, for deciding the day’s vrata/karma.