長阿含經 13.p97

13.p97

“Ānanda, it’s like rubbing a pair of sticks together to start a fire. When each stick is put in a different place, there won’t be any fire. This is likewise. Because of the condition of pleasant contact, pleasant feeling arises. If pleasant contact ceases, both it and the feeling cease. Because of the condition of painful contact, painful feeling arises. If painful contact ceases, both it and the feeling cease. Because of the condition of contact that’s neither pleasant nor painful, feeling that’s neither pleasant nor painful arises. If contact that’s neither pleasant nor painful ceases, both it and the feeling cease.