What is Vairocanābhisaṃbodhi Sūtra?

The Vairocanābhisaṃbodhi Sūtra , also known as the Mahāvairocana Tantra is an important Vajrayana Buddhist text composed before 674 CE. The Indian tantric master Buddhaguhya classified the text as a caryātantra, and in Tibetan Buddhism it is still considered to be a member of the carya classification. In Japan where it is known as the Mahāvairocana Sūtra , it is one of two central texts in the Shingon school, along with the Vajrasekhara Sutra. Both are also part of the Tendai school.

The longer title of the scripture is Mahāvairocanābhisaṃbodhivikurvitādhiṣṭhānavaipulyasūtrendrarājanāmadharmaparyāya. Though the text is often called a tantra by later figures , the scripture does not call itself a tantra.