One verse

Srimad Bhagavatam 11.7.51

11.7.51

बुध्यते स्वे न भेदेन व्यक्तिस्थ इव तद्गत: । लक्ष्यते स्थूलमतिभिरात्मा चावस्थितोऽर्कवत् ॥ ५१ ॥

budhyate sve na bhedena vyakti-stha iva tad-gataḥ lakṣyate sthūla-matibhir ātmā cāvasthito ’rka-vat

budhyate
is thought of
sve
in his original form
na
not
bhedena
in terms of diversity
vyakti
on separate reflecting objects
sthaḥ
situated
iva
apparently
tat-gataḥ
actually having entered within them
lakṣyate
seems
sthūla-matibhiḥ
to those whose intelligence is dull
ātmā
the self
ca
also
avasthitaḥ
situated
arkavat
like the sun

Even when reflected in various objects, the sun is never divided, nor does it merge into its reflection. Only those with dull brains would consider the sun in this way. Similarly, although the soul is reflected through different material bodies, the soul remains undivided and nonmaterial.