Vanisource:Sloka of the day/December 22, 2008
sādhana-bhakti haite haya ‘rati’ra udaya
rati gāḍha haile tāra ‘prema’ nāma kaya
By regularly rendering devotional service, one gradually becomes attached to the Supreme Personality of Godhead. When that attachment is intensified, it becomes love of Godhead.