From:

The Heart Essence of the Dakinis

In the dharmadhatu palace of Akanishtha which is utterly pure space, the glorious conqueror Samantabhadra with consort is the dharmakaya beyond defilement which is not made out of any concrete entity whatsoever and yet manifests in a form with face and arms. From within this unconstructed state of dharmakaya, in the realm of Akanishtha, he taught glorious Vajrasattva by means of natural blessings.

Glorious Vajrasattva, the sambhogakaya adorned with the major and minor marks, in the celestial palace of the Blazing Fire Mountain charnel ground, taught—with few words—the emanation Prahevajra, the one who though remaining in the world of men is equal to the buddhas in realization. Prahevajra taught the master Shri Singha in the charnel ground of Wild Jungle by establishing the actuality in Shri Singha himself. In the great charnel ground of Sosadvipa, Shri Singha then taught the great vidyadhara known as Padma Tötreng Tsal, the one whose vajra-like body is beyond birth and death, passing and transmigration, by revealing the natural state free of assumptions.