Terma

Terma are "treasures": teachings, texts and objects held in the Nyingma and Bon traditions to have been concealed, chiefly by Padmasambhava and Yeshe Tsogyal in the eighth century, for discovery at the moment when they would be needed. The discoverer is a terton, a treasure revealer, understood to be a rebirth of one of Padmasambhava's disciples and to have been prophesied in the concealed material itself.

The tradition distinguishes earth treasures, physical texts and objects recovered from rocks, lakes, pillars, temples and statues, from mind treasures, which arise directly in the revealer's mind without a physical object. A characteristic mechanism is the yellow scroll inscribed in dakini script, which functions as a mnemonic key: a few symbols trigger the recollection of a far longer teaching received in a former life. The Bardo Thodol, known in English as the Tibetan Book of the Dead, is a terma revealed by Karma Lingpa in the fourteenth century, and the Longchen Nyingthig, revealed by Jigme Lingpa in the eighteenth, is among the most influential bodies of Tibetan practice.

The rationale the tradition gives is explicit. Treasures keep the teaching fresh and adapted to the time of revelation, delivering it in a form suited to circumstances that Padmasambhava is held to have foreseen; and they shorten the transmission lineage between source and recipient, which is presented as an advantage over long lineages in which corruption might accumulate.

The practice has been contested since it began. Critics within Tibetan Buddhism, chiefly from the schools of the later diffusion, argued that terma are new compositions presented as ancient revelation, and applied to them the criterion of demonstrable Indian origin. Defenders replied that such a criterion would exclude a good deal that all schools accept, and that treasures are authenticated instead by their doctrinal content, by the qualifications and conduct of the revealer, and by the results of practising them; institutional procedures for validating a terton and his revelations developed in response.

Historians and text-critical scholars generally describe terma as a genuine and highly productive mechanism of continuing revelation operating within a tradition whose canon is formally closed, and note that functionally comparable mechanisms, pseudonymous attribution, revealed continuation, recovered scripture, appear in many religious traditions. That description is compatible with the tradition's own account and deliberately does not adjudicate it.

Among the many tertons Nyingma and Bon tradition recognizes, Chogyur Lingpa (1829-1870) offers a well-documented case study of how the treasure tradition actually operated, closely associated as he was with two of the most influential figures of the non-sectarian (Rime) movement.

Chogyur Lingpa worked with Jamgon Kongtrul and Jamyang Khyentse Wangpo, the movement's two most prominent scholars, who helped authenticate and disseminate his revelations, illustrating the institutional validation process the main entry mentions: a terton's revelations gained wider acceptance partly through endorsement by respected scholars outside his own lineage, functioning as peer review within a system with no single central authority able to certify revelation unilaterally. His revelations, encompassing texts, ritual cycles and site identifications across eastern Tibet, were substantial enough that Kongtrul incorporated a significant body of terma material into the Rinchen Terdzo, an anthology that remains a central textual collection of Nyingma practice today.

The case illustrates a pattern distinct from the earlier, more solitary model of figures like Padmasambhava's own concealment: by the nineteenth century, treasure revelation had become embedded in a recognizable process involving collaboration between tertons and established scholars, formal compilation into lasting anthologies, and integration into the ecumenical project the Rime movement pursued of preserving teachings across sectarian lines.