an.7.17 Aṅguttara Nikāya (Numbered Discourses)
Observing Suffering
“Mendicants, these seven people are worthy of offerings dedicated to the gods, worthy of hospitality, worthy of a religious donation, worthy of greeting with joined palms, and are the supreme field of merit for the world.What seven?
First, take a person who meditates observing suffering in all conditions. They perceive suffering and experience suffering. Constantly, continually, and without interruption, they apply the mind and fathom with wisdom. …”