One verse

Srimad Bhagavatam 9.14.43

9.14.43

स्थालीं न्यस्य वने गत्वा गृहानाध्यायतो निशि । त्रेतायां सम्प्रवृत्तायां मनसि त्रय्यवर्तत ॥ ४३ ॥

sthalim nyasya vane gatva grhan adhyayato nisi tretayam sampravrttayam manasi trayy avartata

sthalim
the woman Agnisthali
nyasya
immediately giving up
vane
in the forest
gatva
on returning
grhan
at home
adhyayatah
began to meditate
nisi
the whole night
tretayam
when the Treta millennium
sampravrttayam
was just on the point of beginning
manasi
in his mind
trayi
the principles of the three Vedas
avartata
became revealed.

King Pururava then left Agnisthali in the forest and returned home, where he meditated all night upon Urvasi. In the course of his meditation, the Treta millennium began, and therefore the principles of the three Vedas, including the process of performing yajna to fulfill fruitive activities, appeared within his heart.