5.
The Discourse on the Wholesome Heap
411.
"'A heap of wholesome,' monks, speaking rightly one would say of the four establishments of mindfulness.
For this is the entire heap of wholesome, that is to say -
the four establishments of mindfulness.
"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. observing mind... etc. He dwells observing mental phenomena in mental phenomena, ardent, fully aware, mindful, having removed covetousness and displeasure regarding the world. 'A heap of wholesome,' monks, speaking rightly one would say of these four establishments of mindfulness. For this is the entire heap of wholesome, that is to say - the four establishments of mindfulness." The fifth.