One verse

Srimad Bhagavatam 10.13.43

10.13.43

एवमेतेषु भेदेषु चिरं ध्यात्वा स आत्मभू: । सत्या: के कतरे नेति ज्ञातुं नेष्टे कथञ्चन ॥ ४३ ॥

evam eteṣu bhedeṣu ciraṁ dhyātvā sa ātma-bhūḥ satyāḥ ke katare neti jñātuṁ neṣṭe kathañcana

evam
in this way
eteṣu bhedeṣu
between these boys, who were existing separately
ciram
for a long time
dhyātvā
after thinking
saḥ
he
ātma-bhūḥ
Lord Brahmā
satyāḥ
real
ke
who
katare
who
na
are not
iti
thus
jñātum
to understand
na
not
iṣṭe
was able
kathañcana
in any way at all

Thus Lord Brahmā, thinking and thinking for a long time, tried to distinguish between those two sets of boys, who were each separately existing. He tried to understand who was real and who was not real, but he couldn’t understand at all.