The Related Suttas Collection 22.15

2. Impermanence

That Which is Impermanent

At Sāvatthī.

“Bhikkhus, form is impermanent. What’s impermanent is suffering. What’s suffering is not-self. And what’s not-self should be truly seen with right understanding like this: ‘This is not mine, I am not this, this is not my self.’

Feeling is impermanent …

Perception is impermanent …

Choices are impermanent …

Consciousness is impermanent. What’s impermanent is suffering. What’s suffering is not-self. And what’s not-self should be truly seen with right understanding like this: ‘This is not mine, I am not this, this is not my self.’

Seeing this … They understand: ‘… there is no return to any state of existence.’”