sā kāmarūpā sambhoga-tṛṣṇāṁ yā nayati svatām
sā kāmarūpā sambhoga-tṛṣṇāṁ yā nayati svatām |
yad asyāṁ kṛṣṇa-saukhyārtham eva kevalam udyamaḥ ||
(Bhakti-rasāmṛta-sindhu: 1.2.283)
“That [bhakti] which draws desire for complete enjoyment [i.e., amorous union] (sambhoga) into its own self is [known as] kāma-rūpā [-rāgātmikā-bhakti] since within it is only endeavor exclusively for the sake of Kṛṣṇa’s happiness.”