7.
The Second Discourse on Perception
57.
"Monks, these ten perceptions, when developed and cultivated, are of great fruit and great benefit, grounded upon the Deathless, having the Deathless as their final goal.
What ten?
Perception of impermanence, perception of non-self, perception of death, perception of repulsiveness in food, perception of discontent with the whole world, perception of a skeleton, perception of worms, perception of the discoloured, perception of the full of holes, perception of the bloated -
these, monks, are the ten perceptions which, when developed and cultivated, are of great fruit and great benefit, grounded upon the Deathless, having the Deathless as their final goal."
The seventh.