Bhāṣya
। ? ॥
In plain words
Through all of them, every last one, all of them made of nothing but this spread-out world — Being runs like a thread. Anusyūtam: it goes right through them, it fills them. And that is exactly why the many things, all of them, made of the manifold, never touch it. Why not? Because it is like the sky — like open space — always, at every moment, pure, meaning unstained, with no passion or any fault of that kind ever settling on it, clear all the way through, deathless. That supreme Brahman: that am I, the Self. That is how the words of the verse hold together.
Close to the Sanskrit
In all, without remainder, having the world-manifold as their nature — threaded through as Being: 'gone through', 'pervaded'. For thus, all the many things, whose nature is the world-manifold, do not touch that which is Being in form. Why? Like the sky — that is, like space — always, at all times, pure, that is, stainless, free of the faults beginning with passion, whose nature is clear, whose form is deathless: that supreme Brahman — 'that I am, the Self' — such is the syntactic connection.