One verse

Srimad Bhagavatam 11.24.2

11.24.2

आसीज्ज्ञानमथो अर्थ एकमेवाविकल्पितम् । यदा विवेकनिपुणा आदौ कृतयुगेऽयुगे ॥ २ ॥

āsīj jñānam atho artha ekam evāvikalpitam yadā viveka-nipuṇā ādau kṛta-yuge ’yuge

āsīt
there existed
jñānam
the seer
atha u
thus
arthaḥ
the seen
ekam
one
eva
simply
avikalpitam
undifferentiated
yadā
when
viveka
in discrimination
nipuṇāḥ
persons who were expert
ādau
in the beginning
kṛta-yuge
in the age of purity
ayuge
and before that, during the time of annihilation

Originally, during the Kṛta-yuga, when all men were very expert in spiritual discrimination, and also previous to that, during the period of annihilation, the seer existed alone, nondifferent from the seen object.