। ॥ ७३ ॥
In plain words
What you need to understand right now is how to tell the Self from everything that isn't the Self. I am about to lay it out for you clearly — listen well, and hold it firmly within.
Close to the Sanskrit
What must now be understood by you — the discrimination between Self and non-Self — that is being told by me properly. Having heard it, fix it firmly in yourself.