śuddha-sattva-viśeṣātmā
śuddha-sattva-viśeṣātmā prema-sūryāṁśu-sāmya-bhāk |
rucibhiś citta-māsṛṇya-kṛd asau bhāva ucyate ||
(Bhakti-rasāmṛta-sindhu: 1.3.1)
“That [i.e., that aspect of uttamā-bhakti] which is constituted of a special aspect of śuddha-sattva, is a bearer of resemblance to a ray of the sun of prema, and is a melter of the heart with hankerings, is called bhāva [-bhakti].”