upāvṛttasya pāpebhyo yas tu vāso guṇaiḥ saha
upāvṛttasya pāpebhyo yas tu vāso guṇaiḥ saha |
upavāsaḥ sa vijñeyaḥ sarva-bhoga-vivarjitaḥ ||
(Hari-bhakti-vilāsa: 13.35)
“The abiding (vāsa) with virtues and without all enjoyments of one who abstains (upāvṛttasya) from sins is to be known as upavāsa [i.e., ‘fasting’].”