One verse

Srimad Bhagavatam 6.2.11

6.2.11

न निष्कृतैरुदितैर्ब्रह्मवादिभि- स्तथा विशुद्ध्यत्यघवान् व्रतादिभि: । यथा हरेर्नामपदैरुदाहृतै- स्तदुत्तमश्लोकगुणोपलम्भकम् ॥ ११ ॥

na niskrtair uditair brahma-vadibhis tatha visuddhyaty aghavan vratadibhih yatha harer nama-padair udahrtais tad uttamasloka-gunopalambhakam

na
not
niskrtaih
by the processes of atonement
uditaih
prescribed
brahma-vadibhih
by learned scholars such as Manu
tatha
to that extent
visuddhyati
becomes purified
agha-van
a sinful man
vrata-adibhih
by observing the vows and regulative principles
yatha
as
hareh
of Lord Hari
nama-padaih
by the syllables of the holy name
udahrtaih
chanted
tat
that
uttamasloka
of the Supreme Personality of Godhead
guna
of the transcendental qualities
upalambhakam
reminding one

By following the Vedic ritualistic ceremonies or undergoing atonement, sinful men do not become as purified as by chanting once the holy name of Lord Hari. Although ritualistic atonement may free one from sinful reactions, it does not awaken devotional service, unlike the chanting of the Lord’s names, which reminds one of the Lord’s fame, qualities, attributes, pastimes and paraphernalia.