Vinaya Pitaka
Theravada monasticism is organized around the guidelines found within a division of the Pāli Canon called the "Vinaya Pitaka". Laypeople undergo ordination as a novitiate (śrāmaṇera or sāmanera) in a rite known as the "going forth" (Pali: "pabbajja"). Sāmaneras are subject to the Ten Precepts. From there full ordination (Pali: "upasampada") may take place. Bhikkhus are subject to a much longer set of rules known as the Pātimokkha (Theravada) or Prātimokṣa (Mahayana and Vajrayana).