Tithi-Nirṇaya for Vratas: Ekādaśī Rules, Saṅkrānti Punya-kāla, Eclipse Observances, and Prāyaścitta
श्रौतं स्मार्त्तं व्रतं दानं यच्चान्यत्कर्म वैदिकम् । अनिर्णीतासु तिथिषु न किंचित्फलति द्विज ॥ २ ॥
śrautaṃ smārttaṃ vrataṃ dānaṃ yaccānyatkarma vaidikam | anirṇītāsu tithiṣu na kiṃcitphalati dvija || 2 ||
હે દ્વિજ! શ્રૌત કર્મ હોય, સ્માર્ત આચાર હોય, વ્રત હોય, દાન હોય કે અન્ય કોઈ વૈદિક કર્મ—જો તિથિનું યોગ્ય નિર્ધારણ ન થયું હોય તો તેનું કશુ ફળ મળતું નથી।
Sanatkumara (teaching Narada on dharma and ritual timing)
Vrata: none
Primary Rasa: shanta
Secondary Rasa: bhakti
It teaches that dharmic actions must be aligned with sacred time (kāla); without correct tithi-nirṇaya, even sincerely performed Vedic rites fail to produce their intended spiritual merit (phala).
By stressing disciplined observance—vratas, dāna, and worship done at the proper tithi—this verse supports bhakti as a regulated practice (niyama) where devotion is strengthened through correct, scripture-aligned timing.
Jyotiṣa Vedāṅga (Vedic astronomy/astrology) is central: determining the correct tithi is presented as essential for the validity and fruit of śrauta, smārta, vrata, and dāna practices.