Bhagavatapurana 3.7.19

3.7.19

yat-sevayā bhagavataḥ kūṭa-sthasya madhu-dviṣaḥ /
rati-rāso bhavet tīvraḥ pādayor vyasanārdanaḥ //

19. And through service to Thee can be had the feast of intense and natural love to the feet of the glorious Lord, the enemy of Madhu, who is never subject to changes; and (this) is powerful enough to beat out all miseries.