Srimad Bhagavatam Canto 10, Chapter 20, Text 33

SB 10.20.33

sarada nirajotpattya
 nirani prakrtim yayuh
bhrastanam iva cetamsi
 punar yoga-nisevaya
 
Translation: 
 
The autumn season, which regenerated the lotus flowers, also restored the various bodies of water to their original purity, just as the process of devotional service purifies the minds of the fallen yogis when they return to it.
Srimad Bhagavatam Canto 10, Chapter 20, Text 32
Srimad Bhagavatam Canto 10, Chapter 20, Text 34