One verse

Srimad Bhagavatam 7.9.34

7.9.34

तत्सम्भव: कविरतोऽन्यदपश्यमान- स्त्वां बीजमात्मनि ततं स बहिर्विचिन्त्य । नाविन्ददब्दशतमप्सु निमज्जमानो जातेऽङ्कुरे कथमुहोपलभेत बीजम् ॥ ३४ ॥

tat-sambhavah kavir ato ’nyad apasyamanas tvam bijam atmani tatam sa bahir vicintya navindad abda-satam apsu nimajjamano jate ’nkure katham uhopalabheta bijam

tat-sambhavah
who was generated from that lotus flower
kavih
he who can understand the subtle cause of creation (Lord Brahma)
atah
from that (lotus)
anyat
anything else
apasyamanah
not able to see
tvam
Your Lordship
bijam
the cause of the lotus
atmani
in himself
tatam
expanded
sah
he (Lord Brahma)
bahih vicintya
considering to be external
na
not
avindat
understood (You)
abda-satam
for a hundred years according to the demigods*
</a> apsu
in the water
nimajjamanah
diving
jate ankure
when the seed fructifies and is manifested as a creeper
katham
how
uha
O my Lord
upalabheta
one can perceive
bijam
the seed that has already fructified

From that great lotus flower, Brahma was generated, but Brahma certainly could see nothing but the lotus. Therefore, thinking You to be outside, Lord Brahma dove into the water and attempted to find the source of the lotus for one hundred years. He could find no trace of You, however, for when a seed fructifies, the original seed cannot be seen.