यथा बुद्बुदनाशेन जलनाशो न कर्हिचित् ।तथा प्रपञ्चनाशेन नाशः स्यादात्मनो न हि ॥ १५ ॥
In plain words
A bubble bursts, and the water is never once the less for it. In just the same way, let the whole spread-out world dissolve — no destruction touches the Ātman. Not ever.
Close to the Sanskrit
Just as, by the destruction of a bubble, there is never any destruction of water, so, by the destruction of the manifold world, there could indeed be no destruction of the Self.