“Bhikkhus, these three feelings are born of contact, rooted in contact, with contact as their source and condition. What three? Pleasant feeling, painful feeling, neither-painful-nor-pleasant feeling.
“In dependence on a contact to be experienced as pleasant, bhikkhus, a pleasant feeling arises. With the cessation of that contact to be experienced as pleasant, the corresponding feeling—the pleasant feeling that arose in dependence on that contact to be experienced as pleasant—ceases and subsides.
“In dependence on a contact to be experienced as painful, a painful feeling arises. With the cessation of that contact to be experienced as painful, the corresponding feeling—the painful feeling that arose in dependence on that contact to be experienced as painful—ceases and subsides.
“In dependence on a contact to be experienced as neither-painful-nor-pleasant, a neither-painful-nor-pleasant feeling arises. With the cessation of that contact to be experienced as neither-painful-nor-pleasant, the corresponding feeling—the neither-painful-nor-pleasant feeling that arose in dependence on that contact to be experienced as neither-painful-nor-pleasant—ceases and subsides.
“Bhikkhus, just as heat is generated and fire is produced from the conjunction and friction of two fire-sticks, but when the sticks are separated and laid aside the resultant heat ceases and subsides; so too, these three feelings are born of contact, rooted in contact, with contact as their source and condition. In dependence on the appropriate contacts the corresponding feelings arise; with the cessation of the appropriate contacts the corresponding feelings cease.” sn.iv.216