3.
The Discourse on the Monk
835.
"Monks, there are these four bases for spiritual power.
Which four?
Here, monks, a monk develops the basis for spiritual power that possesses concentration due to desire and volitional activities of striving, concentration due to energy, etc.
concentration due to mind, etc.
he develops the basis for spiritual power that possesses concentration due to investigation and volitional activities of striving -
these, monks, are the four bases for spiritual power.
Because of having developed and cultivated these four bases for spiritual power, monks, a monk, through the elimination of the mental corruptions, realised by his own direct knowledge, in this very life, the liberation of mind and the liberation by wisdom that are free from mental corruptions and, having entered upon them, dwells in them."
The third.