[797] When the Venerable Rāhula was seated to one side, the Blessed One said this to him: "What do you think, Rāhula — is the eye permanent or impermanent?"
"Impermanent, [venerable sir.]" …
[The source text resumes:] "… whatever arises [dependent on that contact] that is included in feeling (vedanā), included in perception (saññā), included in volitional formations (saṅkhārā), included in consciousness (viññāṇa) — is that too permanent or impermanent?"
"Impermanent, venerable sir."
"But that which is impermanent — is it suffering (dukkha) or is it happiness?"
"Suffering, venerable sir."
"But that which is impermanent, suffering, and subject to change — is it fit to be regarded thus: 'This is mine, this I am, this is my self'?"
"Certainly not, venerable sir."
English translation from the Pali (Siam Raṭṭha edition) — under review, not for citation.