सर्वोपाधिविनिर्मुक्तं तत्परत्वेन निर्मलम् ।
हृषीकेण हृषीकेशसेवनं भक्तिरुच्यते ॥
sarvopādhi-vinirmuktaṁ tat-paratvena nirmalam |
hṛṣīkeṇa hṛṣīkeśa-sevanaṁ bhaktir ucyate ||
(Nārada Pañcarātra; cited in Bhakti-rasāmṛta-sindhu: 1.1.12)
“Service with [all] the senses to Hṛṣīkeśa [i.e., Kṛṣṇa, the master of the senses] with intentness upon him [i.e., upon his pleasure] that is completely free from all upādhis [i.e., adjuncts—extraneous desirousness], and untainted [i.e., unobstructed by jñāna, karma, and so forth] is called bhakti.”