Raty Āswāda Hetu Jata Bibhāba Nāmete Khyāta

The causes of relishing rasa are called vibhāva, which is divided into alambana (primary causes of love) and uddīpana (secondary causes of love). The lover is the devortee and the
beloved is Lord Kṛṣṇa.

Lord Kṛṣṇa is the crest jewel of heroes. He is decorated with the jewels of transcendental qualities. He is the eternal abode of all transcendental qualities. He is greater than the greatest. Of the devotees who love Him, and who are also glorious with transcendental qualities, some are perfect (siddha) and others are aspiring for perfection (sādhaka).

The things that stimulate ecstatic love are called uddīpanas. These are things that have a relationship with Lord Kṛṣṇa. They include Kṛṣṇa's smile, bodily fragrance, buffalo-horn
bugle, flute, conchshell, abode, bumblebees, footprints, and tinkling ankle-bells.

Tulasī, the signs of devotional service, and seeing the devotees are also included among the uddīpanas, which cause one to relish the nectar of devotional service. This was taught by
Śrīla Rūpa Gosvāmī and Śrīla Sanātana Gosvāmī.