Verse 17

तदसौ सुसमं स्फारं पदं परमपावनम् ।सर्वभावान्तरगतमभूत्सर्वविवर्जितम्

In plain words

That he became: perfectly even, vast, the supreme and most purifying station -- present within the innermost of every existing thing, and yet free of everything whatever.