This volume resolves the ontology from the two previous volumes concerning the concept of a 'subtle self'. First a commentary of the Tantra Great Gates of Diamond Liberation, that presents detailed information concerning the nature of some important chakras: the Heart, Throat, Diaphragm, and Splenic centres I and II. This adds to what was earlier provided on the Solar Plexus, Sacral and Base of Spine centres. However the focus of the book concerns the attributes of the Sambhogakāya Flower, utilising The Uttaratantra of Maitreya and the Buddha's testimony, thus revealing an esoteric doctrine that has been veiled in Buddhist scriptures.