The Sarvatathāgatatattvasaṃgraha sutra (Sanskrit, Compendium of the Reality of All Tathāgatas), also known as the Tattvasaṃgraha Tantra, is an important seventh century Indian Buddhist tantric text.
Although the scripture refers itself as a Mahayana sutra, the content is mainly tantric in nature and thus is sometimes called a tantra.
This work is an important source for the Shingon tradition.
The Buddhist Tantras are a varied group of Indian and Tibetan texts which outline unique views and practices of the Buddhist tantra religious systems.
Buddhist Tantric texts began appearing in the Gupta Empire period though there are texts with elements associated with Tantra that can be seen as early as the third century.
By the eighth century, Tantra was a dominant force in North India and the number of texts increased with numerous Tantric pandits writing .
Vairocana is a Buddha who has also known as the embodiment of Dharmakaya and therefore can be seen as the universal aspect of the historical Gautama Buddha. In Sino-Japanese Buddhism, he seems to the embodiment of the Buddhist concept of shunyata or Emptiness. In the fifth Buddhism Conception of Vajrayana Buddhism, he is at the center.
His consort is White Tara. The Vairocana statue in Nara's Todai-Ji which is located in Japan is the largest .