One verse

Srimad Bhagavatam 3.28.35

3.28.35

मुक्ताश्रयं यर्हि निर्विषयं विरक्तं निर्वाणमृच्छति मन: सहसा यथार्चि: । आत्मानमत्र पुरुषोऽव्यवधानमेकम् अन्वीक्षते प्रतिनिवृत्तगुणप्रवाह: ॥ ३५ ॥

muktasrayam yarhi nirvisayam viraktam nirvanam rcchati manah sahasa yatharcih atmanam atra puruso ’vyavadhanam ekam anviksate pratinivrtta-guna-pravahah

mukta-asrayam
situated in liberation
yarhi
at which time
nirvisayam
detached from sense objects
viraktam
indifferent
nirvanam
extinction
rcchati
obtains
manah
the mind
sahasa
immediately
yatha
like
arcih
the flame
atmanam
the mind
atra
at this time
purusah
a person
avyavadhanam
without separation
ekam
one
anviksate
experiences
pratinivrtta
freed
guna-pravahah
from the flow of material qualities

When the mind is thus completely freed from all material contamination and detached from material objectives, it is just like the flame of a lamp. At that time the mind is actually dovetailed with that of the Supreme Lord and is experienced as one with Him because it is freed from the interactive flow of the material qualities.