O scion of Bharata, after Svayambhuva Manu had thus entered the forest with his wife, he stood on one leg on the bank of the River Sunanda, and in this way, with only one leg touching the earth, he performed great austerities for one hundred years

Expressions researched:
"O scion of Bharata, after Svayambhuva Manu had thus entered the forest with his wife, he stood on one leg on the bank of the River Sunanda, and in this way, with only one leg touching the earth, he performed great austerities for one hundred years"

Srimad-Bhagavatam

SB Canto 8

O scion of Bharata, after Svayambhuva Manu had thus entered the forest with his wife, he stood on one leg on the bank of the River Sunanda, and in this way, with only one leg touching the earth, he performed great austerities for one hundred years.

SB 8.1.8, Translation and Purport

O scion of Bharata, after Svāyambhuva Manu had thus entered the forest with his wife, he stood on one leg on the bank of the River Sunandā, and in this way, with only one leg touching the earth, he performed great austerities for one hundred years. While performing these austerities, he spoke as follows.

Śrīla Viśvanātha Cakravartī Ṭhākura comments that the word anvāha means that he chanted or murmured to himself, not that he lectured to anyone.