One verse

Srimad Bhagavatam 7.7.33

7.7.33

एवं निर्जितषड्‌‌वर्गै: क्रियते भक्तिरीश्वरे । वासुदेवे भगवति यया संलभ्यते रति: ॥ ३३ ॥

evam nirjita-sad-vargaih kriyate bhaktir isvare vasudeve bhagavati yaya samlabhyate ratih

evam
thus
nirjita
subdued
sat-vargaih
by the six symptoms of the senses (lusty desires, anger, greed, illusion, madness and jealousy)
kriyate
is rendered
bhaktih
devotional service
isvare
unto the supreme controller
vasudeve
to Lord Vasudeva
bhagavati
the Supreme Personality of Godhead
yaya
by which
samlabhyate
is obtained
ratih
attachment.

By these activities (as mentioned above) one is able to cut down the influence of the enemies, namely lust, anger, greed, illusion, madness and jealousy, and when thus situated, one can render service to the Lord. In this way one surely attains the platform of loving service to the Supreme Personality of Godhead.