3.
The Discourse on Failed
399.
"For whomsoever, monks, the four establishments of mindfulness have been missed, missed for them is the noble path rightly leading to the elimination of suffering.
For whomsoever, monks, the four establishments of mindfulness have been undertaken, undertaken for them is the noble path rightly leading to the elimination of suffering.
"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 whomsoever, monks, these four establishments of mindfulness have been missed, missed for them is the noble path rightly leading to the elimination of suffering. For whomsoever, monks, these four establishments of mindfulness have been undertaken, undertaken for them is the noble path rightly leading to the elimination of suffering." The third.