One verse

Srimad Bhagavatam 3.12.52

3.12.52

एवं युक्तकृतस्तस्य दैवञ्चावेक्षतस्तदा । कस्य रूपमभूद् द्वेधा यत्कायमभिचक्षते ॥ ५२ ॥

evam yukta-krtas tasya daivam caveksatas tada kasya rupam abhud dvedha yat kayam abhicaksate

evam
thus
yukta
contemplating
krtah
while doing so
tasya
his
daivam
supernatural power
ca
also
aveksatah
observing
tada
at that time
kasya
of Brahma
rupam
form
abhut
became manifested
dvedha
twofold
yat
which is
kayam
his body
abhicaksate
is said to be.

While he was thus absorbed in contemplation and was observing the supernatural power, two other forms were generated from his body. They are still celebrated as the body of Brahma.