2.
The Discourse on Impermanence
137.
At Sāvatthī.
"Whatever, monks, is impermanent;
therein your desire is to be abandoned.
And what, monks, is impermanent?
Materiality, monks, is impermanent;
therein your desire is to be abandoned.
Feeling is impermanent, etc.
perception...
activities...
consciousness is impermanent;
therein your desire is to be abandoned.
Whatever, monks, is impermanent;
therein your desire is to be abandoned."
The second.