an.4.274 Aṅguttara Nikāya (Numbered Discourses)
Mindfulness Meditation
“For insight into greed, four things should be developed.What four?
Firstly, a mendicant meditates by observing an aspect of the body—keen, aware, and mindful, rid of desire and aversion for the world.
They meditate observing an aspect of feelings … mind … principles—keen, aware, and mindful, rid of desire and aversion for the world.
For insight into greed, these four things should be developed.”