Dharmaguptaka in the context of "Early Buddhist schools"

Buddhist monasticism is one of the earliest surviving forms of organized monasticism and one of the fundamental institutions of Buddhism. Monks and nuns, called bhikkhu (Pali, Skt. bhikshu) and bhikkhuni (Skt. bhikshuni), are responsible for the preservation and dissemination of the Buddha's teaching and the guidance of Buddhist lay people. Three surviving traditions of monastic discipline (Vinaya), govern modern monastic life in different regional traditions: Theravada (Sri Lanka and Southeast Asia), Dharmaguptaka (East Asia), and Mulasarvastivada (Tibet and the Himalayan region).

Risshū (律宗), also Ritsu-shu, is one of the six schools of Nara Buddhism in Japan, noted for its use of the Vinaya textual framework of the Dharmaguptaka, one of the early schools of Buddhism; Risshū is the Japanese term for Vinaya.

The Ritsu school was formally established in China during the Tang dynasty by Daoxuan, founder of the Nanshan Vinaya school. Daoxuan completed the scholastic system of Vinaya studies with his Commentary on the Four-Part Vinaya (四分律行事鈔). He belonged to the lineage of Huiguang (468–537), a disciple of the Dilun school, and trained prominent monks such as Wengang, Zhuxiu, Daoshi, and Hongjing.

A bhikkhunī (Pali: 𑀪𑀺𑀓𑁆𑀔𑀼𑀦𑀻, Sanskrit: भिक्षुणी, romanized: bhikṣuṇī) is a fully ordained Buddhist nun. Bhikkhunīs live by the Vinaya, a set of monastic rules and ethical precepts. The total of codes of conduct prescribed for nuns amounts to either 311 (Theravada school), 348 (Dharmaguptaka school), or 364 (Mulasarvastivada school). Until recently, the lineages of female monastics only remained in Mahayana Buddhism and thus were prevalent in countries such as China, Korea, Taiwan, Japan, and Vietnam, while a few women have taken the full monastic vows in the Theravada and Vajrayana schools. The official lineage of Tibetan Buddhist bhikkhunīs recommenced on 23 June 2022 in Bhutan when 144 nuns, most of them Bhutanese, were fully ordained.

According to the Buddhist Canon, women are as capable of reaching enlightenment as men. The Canon describes that the order of bhikkhunīs was first created by the Buddha at the specific request of his aunt and foster-mother Mahapajapati Gotami, who became the first ordained bhikkhunī. A famous work of the early Buddhist schools is the Therigatha, a collection of poems by elder nuns about enlightenment that was preserved in the Pāli Canon. The canon also describes extra vows required for women to be ordained as bhikkhunīs.

The Pratimokṣa (Sanskrit: प्रातिमोक्ष, romanized: prātimokṣa) is a list of rules (contained within the vinaya) governing the behaviour of Buddhist monastics (monks or bhikṣus and nuns or bhikṣuṇīs). Prati means "towards" and mokṣa means "liberation" from cyclic existence (saṃsāra).

It became customary to recite these rules once a fortnight at a meeting of the sangha during which confession would traditionally take place. A number of prātimokṣa codes are extant, including those contained in the Theravāda, Mahāsāṃghika, Mahīśāsaka, Dharmaguptaka, Sarvāstivāda and Mūlasarvāstivāda vinayas. Pratimokṣa texts may also circulate in separate pratimokṣa sūtras, which are extracts from their respective vinayas.

The Mahīśāsaka (Sanskrit: महीशासक; traditional Chinese: 化地部; ; pinyin: Huàdì Bù; Vietnamese: Hóa địa bộ) is one of the early Buddhist schools according to some records. Its origins may go back to the dispute in the Second Buddhist Council. The Dharmaguptaka sect is thought to have branched out from the Mahīśāsaka sect toward the end of the 2nd or the beginning of the 1st century BCE.