SB 10.20.40
niscalambur abhut tusnim
samudrah sarad-agame
atmany uparate samyan
munir vyuparatagamah
Translation:
With the arrival of autumn, the ocean and the lakes became silent, their water still, just like a sage who has desisted from all material activities and given up his recitation of Vedic mantras.
Purport:
One recites ordinary Vedic mantras for material promotion, mystic power and impersonal salvation. But when a sage is completely free of personal desire, he vibrates the transcendental glories of the Supreme Lord exclusively.