One verse

Srimad Bhagavatam 3.12.37

3.12.37

मैत्रेय उवाच ऋग्यजु:सामाथर्वाख्यान् वेदान् पूर्वादिभिर्मुखै: । शास्त्रमिज्यां स्तुतिस्तोमं प्रायश्चित्तं व्यधात्क्रमात् ॥ ३७ ॥

maitreya uvaca rg-yajuh-samatharvakhyan vedan purvadibhir mukhaih sastram ijyam stuti-stomam prayascittam vyadhat kramat

maitreyah uvaca
Maitreya said
rk-yajuh-sama-atharva
the four Vedas
akhyan
of the name
vedan
Vedic literatures
purva-adibhih
beginning with the front
mukhaih
by the mouths
sastram
Vedic hymns not pronounced before
ijyam
priestly rituals
stuti-stomam
the subject matter of the reciters
prayascittam
transcendental activities
vyadhat
established
kramat
one after another.

Maitreya said: Beginning from the front face of Brahma, gradually the four Vedas—Rk, Yajur, Sama and Atharva—became manifest. Thereafter, Vedic hymns which had not been pronounced before, priestly rituals, the subject matters of the recitation, and transcendental activities were all established, one after another.