SN35.86 — Saṅkhittadhammasutta
Once, when the Venerable Ānanda was seated to one side, he said to the Blessed One:
Venerable sir, it would be good if the Blessed One would teach me the Dhamma in brief, so that having heard the Dhamma from the Blessed One, I might dwell alone, withdrawn, diligent, ardent, and resolute.
What do you think, Ānanda, is the eye permanent or impermanent?
Impermanent, venerable sir.
Now, is what is impermanent suffering or happiness?
Suffering, venerable sir.
Now, is what is impermanent, suffering, and subject to change fit to be regarded thus: This is mine, this I am, this is my self?
No, venerable sir.
Is form permanent or impermanent?
Impermanent, venerable sir.
… (...)
What arises in dependence on eye-contact, whether pleasant, painful, or neither-painful-nor-pleasant, permanent or impermanent?
Impermanent, venerable sir.
Now, is what is impermanent suffering or happiness?
Suffering, venerable sir.
Now, is what is impermanent, suffering, and subject to change fit to be regarded thus: This is mine, this I am, this is my self?
No, venerable sir.
… (...)
Is the tongue permanent or impermanent?
Impermanent, venerable sir.
… (...)
What arises in dependence on mind-contact, whether pleasant, painful, or neither-painful-nor-pleasant, permanent or impermanent?
Impermanent, venerable sir.
Now, is what is impermanent suffering or happiness?
Suffering, venerable sir.
Now, is what is impermanent, suffering, and subject to change fit to be regarded thus: This is mine, this I am, this is my self?
No, venerable sir.
… (...)
Seeing thus, Ānanda, the instructed noble disciple becomes disenchanted with the eye … disenchanted with eye-contact … disenchanted with what arises in dependence on mind-contact, whether pleasant, painful, or neither-painful-nor-pleasant. Becoming disenchanted, he becomes dispassionate. Through dispassion, he is liberated. When he is liberated, there comes the knowing: It is liberated. He knows: Birth is destroyed, the holy life has been lived, what had to be done has been done, there is no more coming to any state of being.