The Vinaya is the first basket of the Buddhist canon, containing the rules of the monastic order, with the stories of how each rule arose, and the procedures for ordination and communal life. Several Vinayas survive; the Theravāda, Dharmaguptaka and Mūlasarvāstivāda ones are still in use in different countries.
Vinaya
The monastic discipline: the rules and procedures governing Buddhist monks and nuns.