One verse

Srimad Bhagavatam 3.32.30

3.32.30

एतद्वै श्रद्धया भक्त्या योगाभ्यासेन नित्यश: । समाहितात्मा नि:सङ्गो विरक्त्या परिपश्यति ॥ ३० ॥

etad vai sraddhaya bhaktya yogabhyasena nityasah samahitatma nihsango viraktya paripasyati

etat
this
vai
certainly
sraddhaya
with faith
bhaktya
by devotional service
yoga-abhyasena
by practice of yoga
nityasah
always
samahita-atma
he whose mind is fixed
nihsangah
aloof from material association
viraktya
by detachment
paripasyati
understands.

This perfect knowledge can be achieved by a person who is already engaged in devotional service with faith, steadiness and full detachment, and who is always absorbed in thought of the Supreme. He is aloof from material association.