गृहीतविष्णुदीक्षाको विष्णुपूजापरो नरः ।
वैष्णवोऽभिहितोऽभिज्ञैरितरोऽस्मादवैष्णवः ॥
gṛhīta-viṣṇu-dīkṣāko viṣṇu-pūjā-paro naraḥ |
vaiṣṇavo’bhihito’bhijñair itaro’smād avaiṣṇavaḥ ||
(Hari-bhakti-vilāsa: 1.55)
“A person who has accepted Viṣṇu-dīkṣā [i.e., initiation into a Viṣṇu-mantra] and engages in worship of Viṣṇu is known as a Vaiṣṇava by the wise. One other than him is a non-Vaiṣṇava.”