Five “collections” that encompass all apparent physical and mental phenomena: form, feeling, perception, formation(s), and consciousness.

One of the “eight close sons of the Buddha,” he is also known as the bodhisattva who embodies compassion. In certain tantras, he is also the lord of the three families, where he embodies the compassion of the buddhas. In Tibet, he attained great significance as a special protector of Tibet, and in China, in female form, as Guanyin, the most important bodhisattva in all of East Asia.

One way of describing experience and the world in terms of eighteen elements: eye, form, and eye consciousness; ear, sound, and ear consciousness; nose, odor, and nose consciousness; tongue, taste, and tongue consciousness; body, touch, and body consciousness; and mind, mental objects, and mind consciousness.

Emptiness denotes the ultimate nature of reality, the total absence of inherent existence and self-identity with respect to all phenomena. According to this view, all things and events are devoid of any independent, intrinsic reality that constitutes their essence. Nothing can be said to exist independent of the complex network of factors that gives rise to its origination, nor are phenomena independent of the cognitive processes and mental constructs that make up the conventional framework within which their identity and existence are posited. When all levels of conceptualization dissolve and when all forms of dichotomizing tendencies are quelled through deliberate meditative deconstruction of conceptual elaborations, the ultimate nature of reality will finally become manifest. It is the first of the three gateways to liberation.

Eighth-century Tibetan editor of Toh 21.

Eighth-century Tibetan editor of Toh 21.

The ancient capital of Magadha prior to its relocation to Pāṭaliputra during the Mauryan dynasty, Rājagṛha is one of the most important locations in Buddhist history. The literature tells us that the Buddha and his saṅgha spent a considerable amount of time in residence in and around Rājagṛha‍—in nearby places, such as the Vulture Peak Mountain (Gṛdhrakūṭaparvata), a major site of the Mahāyāna sūtras, and the Bamboo Grove (Veṇuvana)‍—enjoying the patronage of King Bimbisāra and then of his son King Ajātaśatru. Rājagṛha is also remembered as the location where the first Buddhist monastic council was held after the Buddha Śākyamuni passed into parinirvāṇa. Now known as Rajgir and located in the modern Indian state of Bihar.

Eighth-century Tibetan translator of Toh 21.

One of the principal śrāvaka disciples of the Buddha, he was renowned for his discipline and for having been praised by the Buddha as foremost of the wise (often paired with Maudgalyā­yana, who was praised as foremost in the capacity for miraculous powers). His father, Tiṣya, to honor Śāriputra’s mother, Śārikā, named him Śāradvatīputra, or, in its contracted form, Śāriputra, meaning “Śārikā’s Son.”

Also known as Śāradvatīputra. He was one of the closest disciples of the Buddha, known for his pure discipline and, of the hearer disciples, considered foremost in wisdom.

These can be listed as twelve or as six sense sources (sometimes also called sense fields, bases of cognition, or simply āyatanas).

In the context of epistemology, it is one way of describing experience and the world in terms of twelve sense sources, which can be divided into inner and outer sense sources, namely: (1–2) eye and form, (3–4) ear and sound, (5–6) nose and odor, (7–8) tongue and taste, (9–10) body and touch, (11–12) mind and mental phenomena.

In the context of the twelve links of dependent origination, only six sense sources are mentioned, and they are the inner sense sources (identical to the six faculties) of eye, ear, nose, tongue, body, and mind.

Eighth/ninth-century Indian master important in the transmission of Buddhism to Tibet.

The Gṛdhra­kūṭa, literally Vulture Peak, was a hill located in the kingdom of Magadha, in the vicinity of the ancient city of Rājagṛha (modern-day Rajgir, in the state of Bihar, India), where the Buddha bestowed many sūtras, especially the Great Vehicle teachings, such as the Prajñāpāramitā sūtras. It continues to be a sacred pilgrimage site for Buddhists to this day.