Xct Mu Bu Vb Pc 72Ordaining Under Twenty
Pāli / Sanskrit:Ūnavīsativassa
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The Discourse on Ordaining Under Twenty (Ūnavīsativassa)
Background
The regulation concerning the age of one who goes forth is one of the most important subjects in the Vinaya Piṭaka of the Theravāda Buddhist tradition. The Ūnavīsativassa discourse (Ordaining Under Twenty) is found in the Pātimokkha Sutta of the Bhikkhunī Vibhaṅga, the section on bhikkhunīs, specifically within the group of “Pācittiya” rules — offenses of moderate severity.
This regulation arose from events in the history of the early Sangha community. The Buddha recognized that allowing those who were too young to receive ordination would be disadvantageous to the sustainable development of the Sangha community. Young people lack mental and physical maturity, are easily influenced in harmful ways, find it difficult to complete the course of training, and may damage the reputation of the Dharma. Therefore, the Buddha set a minimum age in order to protect the quality of the Sangha community.
Main Content
The Ūnavīsativassa rule, meaning not yet twenty years old, states that people under twenty years of age, or nearly twenty, are not permitted to recite the ordination ceremony and receive formal admission as bhikkhus or bhikkhunīs. According to the Pāli Vinaya, age is counted from birth, and a person who wishes to go forth must have completed twenty years of age in order to take part in the request for going forth (pabbajjā) and receive the higher ordination (upasampadā).
If a preceptor, teacher, or anyone in the Sangha community allows an underage person to participate in the ordination ceremony, that person commits one of the Pācittiya offenses. This applies whether or not the underage person is truly determined to practice, because the rule is not based on individual will but on the protection of the whole community.
In addition, the Vinaya also considers special cases: if the person can prove their age through clear evidence or reliable witnesses. Nevertheless, the basic principle remains that there is no exception to the age requirement.
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