Since the very beginning, the mind streams of all sentient beings possess the way of being of the inseparability of being lucid and being empty in an intrinsic manner. No matter how it may be obscured by adventitious stains, in terms of its nature, it is never tainted by stains, while the stains exist in the manner of being separable from it. This mind that is the inseparability of being lucid and being empty has the nature of being permanent and being free from change, decrease, and increase. It is ever undeceiving, changeless, and genuinely stable. Throughout all three phases of ground, path, and fruition, it is this nature of the mind that is certain to be solely the object of the genuine meditative equipoise within the qualities that are the nature of phenomena. This is what needs to be manifested through the practice of superior insight.
When the Clouds Part: The Uttaratantra and Its Meditative Tradition as a Bridge between Sutra and Tantra translated by Karl Brunnholzl, page 240