One verse

Srimad Bhagavatam 11.28.36

11.28.36

एतावानात्मसम्मोहो यद् विकल्पस्तु केवले । आत्मनृते स्वमात्मानमवलम्बो न यस्य हि ॥ ३६ ॥

etāvān ātma-sammoho yad vikalpas tu kevale ātman ṛte svam ātmānam avalambo na yasya hi

etāvān
whatever
ātma
of the self
sammohaḥ
delusion
yat
which
vikalpaḥ
idea of duality
tu
but
kevale
in the unique
ātman
in the self
ṛte
without
svam
that very
ātmānam
self
avalambaḥ
basis
na
there is not
yasya
of which (duality)
hi
indeed

Whatever apparent duality is perceived in the self is simply the confusion of the mind. Indeed, such supposed duality has no basis to rest upon apart from one’s own soul.