येषां गुरौ न जप्ये वा विष्णौ च परमात्मनि ।
नास्ति भक्तिः सदा तेषां वचनं परिवर्जयेत् ॥
yeṣāṁ gurau na japye vā viṣṇau ca paramātmani |
nāsti bhaktiḥ sadā teṣāṁ vacanaṁ parivarjayet ||
(Vaiṣṇava Tantra; cited in Hari-bhakti-vilāsa: 12.418)
“Always completely reject the statements of those who do not have bhakti to guru, a mantra [lit., “that which is to be chanted”], or the Paramātmā Viṣṇu.”