10.
The Discourse on Mental Corruptions
416.
"There are these three mental corruptions, monks.
Which three?
Mental corruption of sensuality, mental corruption of existence, mental corruption of ignorance -
these, monks, are the three mental corruptions.
For the abandoning of these three mental corruptions, monks, the four establishments of mindfulness are to be developed.
"Which four? Here, monks, a monk dwells observing the body in the body, ardent, fully aware, mindful, having removed covetousness and displeasure regarding the world; in feelings... etc. In mind... etc. He dwells observing mental phenomena in mental phenomena, ardent, fully aware, mindful, having removed covetousness and displeasure regarding the world. For the abandoning of these three mental corruptions, monks, these four establishments of mindfulness are to be developed." The tenth.