One verse

Srimad Bhagavatam 4.8.61

4.8.61

विरक्तश्चेन्द्रियरतौ भक्तियोगेन भूयसा । तं निरन्तरभावेन भजेताद्धा विमुक्तये ॥ ६१ ॥

viraktas cendriya-ratau bhakti-yogena bhuyasa tam nirantara-bhavena bhajetaddha vimuktaye

viraktah ca
completely renounced order of life
indriya-ratau
in the matter of sense gratification
bhakti-yogena
by the process of devotional service
bhuyasa
with great seriousness
tam
unto Him (the Supreme)
nirantara
constantly, twenty-four hours daily
bhavena
in the topmost stage of ecstasy
bhajeta
must worship
addha
directly
vimuktaye
for liberation.

If one is very serious about liberation, he must stick to the process of transcendental loving service, engaging twenty-four hours a day in the highest stage of ecstasy, and he must certainly be aloof from all activities of sense gratification.