2.
The Discourse on Lust for the Internal as Impermanent
169.
"Whatever, monks, is impermanent, therein your lust is to be abandoned.
And what, monks, is impermanent?
The eye, monks, is impermanent;
therein your lust is to be abandoned." Etc.
The tongue is impermanent;
therein your lust is to be abandoned." Etc.
The mind is impermanent;
therein your lust is to be abandoned.
Whatever, monks, is impermanent, therein your lust is to be abandoned."