Samyutta Nikaya XXXVI.14
Agara Sutta
The Guest House
Translated from the Pali by Nyanaponika Thera
"In a guest house, O monks, people from the east may take lodgings,
or people from the west, north or south. People from the warrior caste
may come and take lodgings there, and also Brahmins, middle class people
and menials.
"Similarly, O monks, there arise in this body various kinds of feelings;
there arise pleasant feelings, painful feelings and neutral feelings; worldly
feelings that are pleasant, painful or neutral, and unworldly (spiritual)
feelings that are pleasant, painful and neutral."