सर्वथैव दुरूहोऽयमभक्तैर्भगवद्रसः ।
तत्पादाम्बुज-सर्वस्वैर्भक्तैरेवानुरस्यते ॥
sarvathaiva durūho’yam abhaktair bhagavad-rasaḥ |
tat-pādāmbuja-sarvasvair bhaktair evānurasyate ||
(Bhakti-rasāmṛta-sindhu: 2.5.131; cited in Caitanya-caritāmṛta: 2.23.100)
“This Bhagavad-rasa is in all cases difficult to comprehend for non-bhaktas. It is relished only by bhaktas whose all is his [i.e., Bhagavān’s] lotus feet.”