One verse

Srimad Bhagavatam 7.7.26

7.7.26

एभिस्त्रिवर्णै: पर्यस्तैर्बुद्धिभेदै: क्रियोद्भ‍वै: । स्वरूपमात्मनो बुध्येद् गन्धैर्वायुमिवान्वयात् ॥ २६ ॥

ebhis tri-varnaih paryastair buddhi-bhedaih kriyodbhavaih svarupam atmano budhyed gandhair vayum ivanvayat

ebhih
by these
tri-varnaih
composed of the three modes of nature
paryastaih
completely rejected (due to not touching the living force)
buddhi
of intelligence
bhedaih
the differentiations
kriya-udbhavaih
produced from different activities
svarupam
the constitutional position
atmanah
of the self
budhyet
one should understand
gandhaih
by the aromas
vayum
the air
iva
exactly like
anvayat
from close connection

As one can understand the presence of the air by the aromas it carries, so, under the guidance of the Supreme Personality of Godhead, one can understand the living soul by these three divisions of intelligence. These three divisions, however, are not the soul; they are constituted of the three modes and are born of activities.