। ॥ ७७० ॥
In plain words
That from which everything arises is Brahman: forever one without a second, untouched by mental constructs or artificial limits, stainless, a dense mass of uninterrupted bliss, still, unsupported, pure, and absolute.
Close to the Sanskrit
From which (source), thence Brahman is ever non-second, devoid of mental constructs, free from limiting adjuncts, stainless, dense with continuous bliss, inactive, without support, pure, one alone.