One verse

Srimad Bhagavatam 8.24.8

8.24.8

कालेनागतनिद्रस्य धातु: शिशयिषोर्बली । मुखतो नि:सृतान् वेदान् हयग्रीवोऽन्तिकेऽहरत् ॥ ८ ॥

kalenagata-nidrasya dhatuh sisayisor bali mukhato nihsrtan vedan hayagrivo ’ntike ’harat

kalena
because of time (the end of Brahma’s day)
agata-nidrasya
when he felt sleepy
dhatuh
of Brahma
sisayisoh
desiring to lie down to sleep
bali
very powerful
mukhatah
from the mouth
nihsrtan
emanating
vedan
the Vedic knowledge
hayagrivah
the great demon named Hayagriva
antike
nearby
aharat
stole.

At the end of Brahma’s day, when Brahma felt sleepy and desired to lie down, the Vedas were emanating from his mouth, and the great demon named Hayagriva stole the Vedic knowledge.