“What meditation does Venerable Anuruddha practice so that physical pain doesn’t occupy his mind?” “Reverends, I meditate with my mind firmly established in the four kinds of mindfulness meditation so that physical pain doesn’t occupy my mind. What four? I meditate observing an aspect of the body … feelings … mind … principles—keen, aware, and mindful, rid of covetousness and displeasure for the world. I meditate with my mind firmly established in these four kinds of mindfulness meditation so that physical pain doesn’t occupy my mind.”

Linked Discourses 52.11 2. A Thousand A Thousand Eons