[50] "Householder, suppose there were a pit of glowing coals, deeper than a man's height, full of coals free of flame and free of smoke. Then a man would come along who wants to live, who does not want to die, who desires happiness and recoils from suffering (dukkha). Two strong men, seizing him by either arm, would drag him toward that pit of glowing coals. What do you think, householder — would that man bend his body toward it, this way and that?"
"No indeed, venerable sir. Why is that? Because, venerable sir, it is known to that man: 'I shall fall into this pit of glowing coals, and on that account I shall incur death or deadly suffering.'"
"In the same way, householder, a noble disciple reflects thus: 'Sensual pleasures have been said by the Blessed One to be like a pit of glowing coals, bringing much suffering and much despair, and the danger (ādīnava) in them is still greater.' Having seen this as it really is with right wisdom … he develops only that equanimity."
English translation from the Pali (Siam Raṭṭha edition) — under review, not for citation.