। ॥ ८ ॥
In plain words
The subject is pure consciousness, and its defining mark is this: jīva and brahman are one. There, and only there, the whole of Vedānta is seen to converge.
Close to the Sanskrit
The subject matter is pure consciousness, having as its defining mark the oneness of jīva and brahman — in which alone is seen the concordance of all the Vedāntas.