The One who is an ocean of Purity.
The One who is PURE in form and nature.
Purity in form is being free from any form.
Purity in nature is being free from all rights and wrongs.
She is the Nirguna Brahman, who is in Her unmanifest state.
She is beyond all qualities, symbolising Her limitless and all-pervading nature.
She is beyond all Maya and beyond all illusions.
She is who exists even after the Universe ends.
She is that state of purity, where everything pervades in its raw essence, without any attributes.
Hence the purest form of purity itself.
Hence, the name Sudhasindhunivasini.