Upavāsa — Fasting as Proximity to Bhagavān
Upavāsa ('dwelling near, abiding with'; upa = near + vāsa = dwelling, residing) is etymologically significant: it does not primarily mean 'not eating' but 'dwelling near [Bhagavān].' This etymological insight shapes the Śrī Vaiṣṇava understanding of fasting: upavāsa is the practice of redirecting the time, energy, and attention that would ordinarily go toward food preparation, eating, and rest, and turning it toward Bhagavān — through extra recitation, meditation, sevā (service), and temple attendance.
The primary occasions for upavāsa in Śrī Vaiṣṇavism are:
Ekādaśī (Eleventh lunar day): The most important fasting day — observed twice each month (Śukla Ekādaśī in the waxing fortnight, Kṛṣṇa Ekādaśī in the waning fortnight). Tradition holds that Ekādaśī is especially auspicious because it is when Viṣṇu rests — the soul, in keeping vigil through fasting, worship, and recitation, accompanies Bhagavān in His rest. The fast is broken on Dvādaśī (twelfth day) with Tulasī-tīrtha (water sanctified with tulasī), symbolizing the receipt of Bhagavān's grace.
Vaikuṇṭha Ekādaśī: The Ekādaśī of Mārgazhi Śukla pakṣa — the supreme Ekādaśī of the year, coinciding in many temples with the beginning of the Rāppathu portion of Adhyayana Utsavam and the opening of the Paramapada Vāsal in Śrīraṅgam and other major temples.
Thirunakshatram days: The birth-star days of the Āzhvārs and Āchāryas are observed with fasting and special worship, as expressions of āchārya-abhimāna (Āchārya devotion).
The deeper significance of upavāsa in Śrī Vaiṣṇava theology connects to the understanding that the body (deha) is Bhagavān's property — not one's own. Fasting is an act of releasing the body's demands temporarily, affirming that the soul's true sustenance comes from Bhagavān's grace, not from food.