। ॥ ६ ॥
In plain words
That is the ground of all that Ajñāna, ignorance, brings forth; without That, none of its effects can appear by itself. At the beginning, the end, the middle, in every interval and within every interval, That is the light by which all appears. That alone I am.
Close to the Sanskrit
That which is the root cause of the effect of Ajñāna—ignorance; that effect, apart from the being of That, does not shine at all of itself; that which is of the nature of the light at beginning, end, middle, interval, and the interval within the interval—that alone I am.