an.10.56 Aṅguttara Nikāya (Numbered Discourses)

Perceptions (1st)

“Mendicants, these ten perceptions, when developed and cultivated, are very fruitful and beneficial. They culminate in the deathless and end with the deathless.
What ten?
The perceptions of ugliness, death, repulsiveness of food, dissatisfaction with the whole world, impermanence, suffering in impermanence, and not-self in suffering, giving up, fading away, and cessation.
These ten perceptions, when developed and cultivated, are very fruitful and beneficial. They culminate in the deathless and end with the deathless.”