長阿含經 13.p96

13.p96

“Why is that? Ānanda, pleasant contact is the condition that gives rise to pleasant feeling. If pleasant contact ceases, the feeling also ceases. Ānanda, painful contact is the condition that gives rise to painful feeling. If painful contact ceases, the feeling also ceases. Contact that’s neither pleasant nor painful is the condition that gives rise to feeling that’s neither pleasant nor painful. If contact that’s neither pleasant nor painful ceases, the feeling also ceases.