One verse

Srimad Bhagavatam 7.15.29

7.15.29

यथा वार्तादयो ह्यर्था योगस्यार्थं न बिभ्रति । अनर्थाय भवेयु: स्म पूर्तमिष्टं तथासत: ॥ २९ ॥

yatha vartadayo hy artha yogasyartham na bibhrati anarthaya bhaveyuh sma purtam istam tathasatah

yatha
as
varta-adayah
activities like occupational or professional duties
hi
certainly
arthah
income (from such occupational duties)
yogasya
of mystic power for self-realization
artham
benefit
na
not
bibhrati
help
anarthaya
without value (binding one to repeated birth and death)
bhaveyuh
they are
sma
at all times
purtam istam
ritualistic Vedic ceremonies
tatha
similarly
asatah
of a materialistic nondevotee

As professional activities or business profits cannot help one in spiritual advancement but are a source of material entanglement, the Vedic ritualistic ceremonies cannot help anyone who is not a devotee of the Supreme Personality of Godhead.