One verse

Srimad Bhagavatam 6.3.32

6.3.32

श‍ृण्वतां गृणतां वीर्याण्युद्दामानि हरेर्मुहु: । यथा सुजातया भक्त्या शुद्ध्येन्नात्मा व्रतादिभि: ॥ ३२ ॥

srnvatam grnatam viryany uddamani harer muhuh yatha sujataya bhaktya suddhyen natma vratadibhih

srnvatam
of those hearing
grnatam
and chanting
viryani
the wonderful activities
uddamani
able to counteract sin
hareh
of the Supreme Personality of Godhead
muhuh
always
yatha
as
su-jataya
easily brought forth
bhaktya
by devotional service
suddhyet
may be purified
na
not
atma
the heart and soul
vrata-adibhih
by performing ritualistic ceremonies.

One who constantly hears and chants the holy name of the Lord and hears and chants about His activities can very easily attain the platform of pure devotional service, which can cleanse the dirt from one’s heart. One cannot achieve such purification merely by observing vows and performing Vedic ritualistic ceremonies.