One verse

Srimad Bhagavatam 7.15.61

7.15.61

स्यात्साद‍ृश्यभ्रमस्तावद्विकल्पे सति वस्तुन: । जाग्रत्स्वापौ यथा स्वप्ने तथा विधिनिषेधता ॥ ६१ ॥

syat sadrsya-bhramas tavad vikalpe sati vastunah jagrat-svapau yatha svapne tatha vidhi-nisedhata

syat
it so becomes
sadrsya
similarity
bhramah
mistake
tavat
as long as
vikalpe
in separation
sati
the part
vastunah
from the substance
jagrat
waking
svapau
sleeping
yatha
as
svapne
in a dream
tatha
similarly
vidhi-nisedhata
the regulative principles, consisting of injunctions and prohibitions.

When a substance and its parts are separated, the acceptance of similarity between one and the other is called illusion. While dreaming, one creates a separation between the existences called wakefulness and sleep. It is in such a state of mind that the regulative principles of the scriptures, consisting of injunctions and prohibitions, are recommended.