SB 11.22.51
prakrter evam atmanam
avivicyabudhah puman
tattvena sparsa-sammudhah
samsaram pratipadyate
Translation:
An unintelligent man, failing to distinguish himself from material nature, thinks nature to be real. By contact with it he becomes completely bewildered and enters into the cycle of material existence.
Purport:
A similar verse is found in Srimad-Bhagavatam (1.7.5):
yaya sammohito jiva
atmanam tri-gunatmakam
paro ’pi manute ’nartham
tat-krtam cabhipadyate
“Due to this external energy, the living entity, although transcendental to the three modes of material nature, thinks of himself as a material product and thus undergoes the reactions of material miseries.”