quality:corruption, structural:summarization
Buddhism

In Theravada Buddhism one finds the designation of ariya-puggala ('noble person'). Buddha described the Four stages of awakening of a person depending on their level of purity. This purity is measured by which of the ten samyojana ('fetters') and klesha have been purified and integrated from the mindstream. These persons are called (in order of increasing sanctity) Sotāpanna, Sakadagami, Anāgāmi, and Arahant.