One verse

Srimad Bhagavatam 4.20.9

4.20.9

य: स्वधर्मेण मां नित्यं निराशी: श्रद्धयान्वित: । भजते शनकैस्तस्य मनो राजन् प्रसीदति ॥ ९ ॥

yah sva-dharmena mam nityam nirasih sraddhayanvitah bhajate sanakais tasya mano rajan prasidati

yah
anyone who
sva-dharmena
by his occupational duties
mam
Me
nityam
regularly
nirasih
without any motive
sraddhaya
with faith and devotion
anvitah
endowed
bhajate
worships
sanakaih
gradually
tasya
his
manah
mind
rajan
O King Prthu
prasidati
becomes fully satisfied.

The Supreme Personality of Godhead, Lord Visnu, continued: My dear King Prthu, when one situated in his occupational duty engages in My loving service without motive for material gain, he gradually becomes very satisfied within.