। ॥ २९९ ॥
In plain words
The ajñāna that causes all this — ignorance and everything it produces — is of an entirely different order from the Real. The wise call it avastu, a non-thing: because its cancellation is something you can actually watch happen.
Close to the Sanskrit
That ignorance which is the cause of that, together with its effects, is of a character other than the Real; it is called 'a non-entity' by the wise, since its cancellation is plainly seen.