9.
The First Discourse on the Dyad
92.
"I will teach you, monks, the dyad.
Listen to that.
And what, monks, is the dyad?
Eye and visible forms, ear and sounds, nose and odours, tongue and flavours, body and tangibles, mind and mental phenomena -
this is called, monks, the dyad.
"Whoever, monks, would say thus - 'Having rejected this dyad, I will declare another dyad,' for him it would be mere words. And if questioned he would not be able to explain. And furthermore he would fall into vexation. What is the reason for this? Because, monks, it is not within his domain." The ninth.