01. The samadhi of as-it-isness.
The first samadhi is a meditation on emptiness where all phenomena are realized as empty in their pure nature. This is the realization of absolute bodhichitta.
02. The samadhi of universal manifestation.
From the samadhi of universal manifestation arise exuberant waves of compassion ,this is the realization of relative bodhichitta.
03. The causal samadhi.
The union of as-it-isness and universal manifestation is known as the causal samadhi, in this state arises a seed-syllable, from which rays of light emerge, purifying the entire environment of samsara and the beings within it into the nature of emptiness. The mind becomes this seed-syllable, which in turn transforms into the pure appearance of the represented deity. The mandala is seen as the palace of the deity. The form of the deity is the indivisible appearance of skilful means and wisdom. All experience is perceived as the retinue and activity of the deity. As one realizes that all perceptions, sounds and thoughts are the vajra nature, one rests in this state of vajra dignity.