Sangha in the context of "Daijō Tennō"

Siddhartha Gautama, most commonly referred to as the Buddha (lit. 'the awakened one'), was a wandering ascetic and religious teacher who lived in South Asia during the 6th or 5th century BCE and founded Buddhism. According to Buddhist legends, he was born in Lumbini, in what is now Nepal, to royal parents of the Shakya clan, but renounced his home life to live as a wandering ascetic. After leading a life of mendicancy, asceticism, and meditation, he attained nirvana at Bodh Gaya in what is now India. The Buddha then wandered through the lower Indo-Gangetic Plain, teaching and building a monastic order (sangha). Buddhist tradition holds he died in Kushinagar and reached parinirvana ("final release from conditioned existence").

According to Buddhist tradition, the Buddha taught a Middle Way between sensual indulgence and severe asceticism, leading to freedom from ignorance, craving, rebirth, and suffering. His core teachings are summarised in the Four Noble Truths and the Noble Eightfold Path, a training of the mind that includes ethical training and kindness toward others, and meditative practices such as sense restraint, mindfulness, dhyana (meditation proper). Another key element of his teachings are the concepts of the five skandhas and dependent origination, describing how all dharmas (both mental states and concrete 'things') come into being, and cease to be, depending on other dharmas, lacking an existence on their own (svabhava).

In Buddhism, refuge or taking refuge refers to a religious practice which often includes a prayer or recitation performed at the beginning of the day or of a practice session. Its object is typically the Three Jewels (also known as the Triple Gem, Three Treasures, or Three Refuges, Pali: ti-ratana or ratana-ttaya; Sanskrit: tri-ratna or ratna-traya), which are the Buddha, the Dharma, and the Sangha. Taking refuge is a form of aspiration to lead a life with the Triple Gem at its core. In early Buddhist scriptures, taking refuge is an expression of determination to follow the Buddha's path, but not a relinquishing of responsibility. Refuge is common to all major schools of Buddhism.

Since the period of Early Buddhism, all Theravada and mainstream Mahayana schools only take refuge in the Triple Gem. However, the Vajrayana school includes an expanded refuge formula known as the Three Jewels and Three Roots.

A cloistered emperor (太上法皇, daijō hōō; also pronounced dajō hōō) is the term for a Japanese emperor who had abdicated and entered the Buddhist monastic community by receiving the Pravrajya rite. The term can also be shortened to Hōō (法皇; lit. "Dharma emperor").

Cloistered emperors sometimes acted as Daijō Tennō (retired emperors), therefore maintaining effective power. This title was first assumed by Emperor Shōmu and was later used by many other emperors who "took the tonsure", signifying a decision to become a Buddhist monk. The last cloistered emperor was Emperor Reigen (r. 1663-1687) in the Edo period.

Sarnath (also known as Deer Park, Sarangnath, Isipatana Deer Park, Rishipattana, Migadaya, or Mrigadava) is a town northeast of Varanasi, in Uttar Pradesh, India. As the Lalitavistara sutra states, the Gautama Buddha chose "Deer Park by the Hill of the Fallen Sages, outside of Varanasi" for his first teaching after he attained enlightenment in Bodh Gaya. The teaching is entitled Dhammacakkappavattana sutra. Sarnath is one of the eight most important pilgrimage sites for Buddhists, and has been nominated to become a UNESCO World Heritage Site.

Sarnath is where Gautama Buddha's sangha first convened, when he gave the first teaching to his original five disciples Kaundinya, Assaji, Bhaddiya, Vappa and Mahanama, known as The First Turning of the Wheel of Dharma. This teaching occurred circa 528 BCE when the Buddha was approximately 35 years of age.

Since the Mahaparinirvana of the historical Buddha, Siddhartha Gautama, Buddhist monastic communities, the "sangha", have periodically convened for doctrinal and disciplinary reasons and to revise and correct the contents of the Buddhist canons. Referred to as Buddhist "councils" (Pāli and Sanskrit: saṅgīti, literally meaning "reciting together" or "joint rehearsal"), the famous First Buddhist Council is recorded in Buddhist texts as being held one year after the Buddha's passing, when Ananda recited all of the spoken sutras, which were recorded in Rajagriha. The two next major Councils were held more than 100 years later.

The details of the later councils are debated by modern Buddhist studies. Various sources belonging to different Buddhist schools may contain different accounts of these events.

A bhikkhu (Pali: भिक्खु, Sanskrit: भिक्षु, romanized: bhikṣu) is an ordained male in Buddhist monasticism. Male, and female monastics (bhikkhunī), are members of the Sangha (Buddhist community).

The lives of all Buddhist monastics are governed by a set of rules called the prātimokṣa or pātimokkha. Their lifestyles are shaped to support their spiritual practice: to live a simple and meditative life and attain nirvana.