I have heard that on one occasion the Blessed One was staying near Vesali , in the Great Forest, at the Gabled Pavilion. Then, in the late afternoon, he left his seclusion and went to the sick ward and on arrival sat down on a prepared seat. As he was sitting there, he addressed the monks: "A monk should approach the time of death mindful & alert. This is our instruction to you all.

"And how is a monk mindful? There is the case where a monk remains focused on the body in & of itself — ardent, alert, & mindful — putting aside greed & distress with reference to the world. He remains focused on feelings in & of themselves... mind in & of itself... mental qualities in & of themselves — ardent, alert, & mindful — putting aside greed & distress with reference to the world. This is how a monk is mindful.

"And how is a monk alert? When going forward & returning, he makes himself fully alert; when looking toward & looking away... when bending & extending his limbs... when carrying his outer cloak, his upper robe & his bowl... when eating, drinking, chewing, & savoring... when urinating & defecating... when walking, standing, sitting, falling asleep, waking up, talking, & remaining silent, he makes himself fully alert. This is how a monk is alert.

"So a monk should approach the time of death mindful & alert. This is our instruction to you all.

"As a monk is dwelling thus mindful & alert — heedful, ardent, & resolute — a feeling of pleasure arises in him. He discerns that 'A feeling of pleasure has arisen in me. It is dependent on a requisite condition, not independent. Dependent on what? Dependent on this body. Now, this body is inconstant, fabricated, dependently co-arisen. Being dependent on a body that is inconstant, fabricated, & dependently co-arisen, how can this feeling of pleasure that has arisen be constant?' He remains focused on inconstancy with regard to the body & to the feeling of pleasure. He remains focused on dissolution... dispassion... cessation... relinquishment with regard to the body & to the feeling of pleasure. As he remains focused on inconstancy... dissolution... dispassion... cessation... relinquishment with regard to the body & to the feeling of pleasure, he abandons any passion-obsession with regard to the body & the feeling of pleasure.

"As he is dwelling thus mindful & alert — heedful, ardent, & resolute — a feeling of pain arises in him. He discerns that 'A feeling of pain has arisen in me. It is dependent on a requisite condition, not independent. Dependent on what? Dependent on this body. Now, this body is inconstant, fabricated, dependently co-arisen. Being dependent on a body that is inconstant, fabricated, & dependently co-arisen, how can this feeling of pain that has arisen be constant?' He remains focused on inconstancy with regard to the body & to the feeling of pain. He remains focused on dissolution... dispassion... cessation... relinquishment with regard to the body & to the feeling of pain. As he remains focused on inconstancy... dissolution... dispassion... cessation... relinquishment with regard to the body & to the feeling of pain, he abandons any resistance-obsession with regard to the body & the feeling of pain.

"As he is dwelling thus mindful & alert — heedful, ardent, & resolute — a feeling of neither-pleasure-nor-pain arises in him. He discerns that 'A feeling of neither-pleasure-nor-pain has arisen in me. It is dependent on a requisite condition, not independent. Dependent on what? Dependent on this body. Now, this body is inconstant, fabricated, dependently co-arisen. Being dependent on a body that is inconstant, fabricated, & dependently co-arisen, how can this feeling of neither-pleasure-nor-pain that has arisen be constant?' He remains focused on inconstancy with regard to the body & to the feeling of neither-pleasure-nor-pain. He remains focused on dissolution... dispassion... cessation... relinquishment with regard to the body & to the feeling of neither-pleasure-nor-pain. As he remains focused on inconstancy... dissolution... dispassion... cessation... relinquishment with regard to the body & to the feeling of neither-pleasure-nor-pain, he abandons any ignorance-obsession with regard to the body & the feeling of neither-pleasure-nor-pain.

"Sensing a feeling of pleasure, he discerns that it is inconstant, not grasped at, not relished. Sensing a feeling of pain... Sensing a feeling of neither-pleasure-nor-pain, he discerns that it is inconstant, not grasped at, not relished. Sensing a feeling of pleasure, he senses it disjoined from it. Sensing a feeling of pain... Sensing a feeling of neither-pleasure-nor-pain, he senses it disjoined from it. When sensing a feeling limited to the body, he discerns that 'I am sensing a feeling limited to the body.' When sensing a feeling limited to life, he discerns that 'I am sensing a feeling limited to life.' He discerns that 'With the break-up of the body, after the termination of life, all that is sensed, not being relished, will grow cold right here.'

" Just as an oil lamp burns in dependence on oil & wick; and from the termination of the oil & wick — and from not being provided any other sustenance — it goes out unnourished; in the same way, when sensing a feeling limited to the body, he discerns that 'I am sensing a feeling limited to the body.' When sensing a feeling limited to life, he discerns that 'I am sensing a feeling limited to life.' He discerns that 'With the break-up of the body, after the termination of life, all that is sensed, not being relished, will grow cold right here.'"