Gyatrul Rinpoche - The foundational Vajrakilaya is the sun shining in the sky...

The foundational Vajrakilaya is the sun shining in the sky behind the clouds. The path Vajrakilaya is the removal of the clouds from the sky through the force of wind and rain, or whatever; it is the path of method and wisdom, combined. And the resultant Vajrakilaya is the nature of your mind, the nature of your rigpa, which is the same mind as the mind of the primordial buddha, Kuntuzangpo. The path Vajrakilaya is the removal of the adventitious veil of obscuration that covers rigpa. Applying the method by practicing generation stage (kyerim) and completion stage (dzogrim), accumulating merit and purifying negative karma, removing that veil, is the path. The result is realizing that ones own self nature is buddha. So the result is the same as the foundation. In the beginning you are buddha, and in the end you are buddha.