Verse 49

आत्मा स्पन्दैकरूपात्मा स्थितस्तेषु क्वचित्क्वचित् ।तरङ्गेषु विलोलेषु पयोधेः सलिलं यथा

In plain words

The Self, in the form solely of spanda, abides in those things here and there -- as the water of the ocean abides in its own restless, tossing waves.