One verse

Srimad Bhagavatam 3.29.10

3.29.10

कर्मनिर्हारमुद्दिश्य परस्मिन्वा तदर्पणम् । यजेद्यष्टव्यमिति वा पृथग्भाव: स सात्त्विक: ॥ १० ॥

karma-nirharam uddisya parasmin va tad-arpanam yajed yastavyam iti va prthag-bhavah sa sattvikah

karma
fruitive activities
nirharam
freeing himself from
uddisya
with the purpose of
parasmin
to the Supreme Personality of Godhead
va
or
tat-arpanam
offering the result of activities
yajet
may worship
yastavyam
to be worshiped
iti
thus
va
or
prthak-bhavah
separatist
sah
he
sattvikah
in the mode of goodness.

When a devotee worships the Supreme Personality of Godhead and offers the results of his activities in order to free himself from the inebrieties of fruitive activities, his devotion is in the mode of goodness.