Fundamental unborn awareness is rigpa. It is awakening, and the goal and the fruit of Buddhist practice. Rigpa is the experience of nonduality – the nonduality of form and emptiness. The form qualities of emptiness are that emptiness is unchanging. The emptiness qualities of form are that form continually changes and moves. In this way emptiness and form are nondual in being inseparable. The experience of unborn awareness—the awareness of nonduality—is hidden by the process of concretising and focussing on form and ignoring emptiness.
Battlecry of Freedom by Ngakma Nor’dzin, Aro Books worldwide, 2019, ISBN 978-1-898185-46-8, Part II - the slogans, p42