6.
The Discourse on Perception
327.
At Sāvatthī.
"Whatever, monks, desire and lust there is for perception of visible forms, that is an impurity of the mind.
Whatever... for perception of sounds...
whatever... for perception of odours...
whatever... for perception of flavours...
whatever... for perception of tangibles...
whatever desire and lust there is for perception of mental phenomena, that is an impurity of the mind.
When, monks, for a monk... etc.
for phenomena to be realised by direct knowledge."
The sixth.