Śrīmad-Bhāgavatam 2.7.5
SB 2.7.5
Open the full passageSanskrit
taptaṁ tapo vividha-loka-sisṛkṣayā me ādau sanāt sva-tapasaḥ sa catuḥ-sano 'bhūt prāk-kalpa-samplava-vinaṣṭam ihātma-tattvaṁ samyag jagāda munayo yad acakṣatātman
Translation
To create different planetary systems I had to undergo austerities and penance, and the Lord, thus being pleased with me, incarnated in four sanas [Sanaka, Sanat-kumāra, Sanandana and Sanātana]. In the previous creation the spiritual truth was devastated, but the four sanas explained it so nicely that the truth at once became clearly perceived by the sages.