Toh 1640Untitled

Explanation of the Abhidharma Treatise Toh 1640 — The Mahayana Tradition of the Northern Tibetan Transmission

Background

Toh 1640 is part of the Tengyur, the Abhidharma corpus of the Mahayana tradition of the Northern Tibetan transmission, compiled during the golden age of Tibetan Buddhism from the ninth to the twelfth centuries. The Abhidharma is a collection of commentaries, doctrinal treatises, and expositions by Mahayana masters on the principal sutra collections, intended to guide practitioners training according to the Mahayana path. The Northern Tibetan tradition continues the lineage from Indian patriarchs such as Nagarjuna and Aryadeva, and from great Tibetan masters from Santaraksita and Kamalashila to teachers such as Atisa.

The emergence of the Tengyur reflects the effort of eminent Tibetan masters to preserve the full breadth of the Buddha Dharma, as scriptures and treatises from India were translated and gathered into a systematic collection. Toh 1640, though it has no clear title in this material, still represents part of the important tradition of teaching and commentary within the foundation of Tibetan Dharma study.

Main Content

The scriptures and treatises in the Tengyur often focus on clarifying the core principles of Mahayana: the bodhisattva path (Bodhisattva-yana), bodhicitta, emptiness (Sunyata), and Buddha-nature. According to the context of the Northern Tibetan tradition, these commentaries often combine three principal approaches: logical reasoning (pramana), meditation (bhavana), and compassionate action (karuna-upaya).

The specific content of this scripture has not been fully translated or rendered in the descriptive information. However, according to the general pattern of Northern Tibetan Abhidharma treatises, Toh 1640 may be a commentary on the theory of bodhicitta, or a doctrinal treatise on the stages of practice on the bodhisattva path. It emphasizes dependent arising (pratityasamutpada), the mutual dependence of all dharmas, as the foundation of true cognition. From this, the practice is built: from the cultivation of concentration and logical examination to the point of realizing the non-independence of self and dharmas.