। ॥
In plain words
This is what sets the wise apart: even as they watch the whole spread of saṃsāra go by, they see nothing in it standing apart from the ātman — the Self that every scripture finally settles on.
Close to the Sanskrit
This is the distinguishing mark of the knowers: even while seeing the manifold round of saṃsāra, they would see nothing whatever apart from the Self, which is ascertained by all the scriptures.