2.
The Discourse on Matter
323.
At Sāvatthī.
"Whatever, monks, desire and lust there is regarding material forms, that is an impurity of the mind.
Whatever regarding sounds...
whatever regarding odours...
whatever regarding flavours...
whatever regarding tangible objects...
whatever desire and lust there is regarding mental objects, that is an impurity of the mind.
When, monks, for a monk the impurity of the mind regarding these six states has been abandoned, his mind slants towards renunciation.
The mind developed through renunciation appears workable for phenomena to be realised by direct knowledge."
The second.