sn.18.4 Saṁyutta Nikāya (Linked Discourses)
Contact
At Sāvatthī.“What do you think, Rāhula?
Is eye contact permanent or impermanent?”
“Impermanent, sir.” …
“… ear contact …
nose contact …
tongue contact …
body contact …
Is mind contact permanent or impermanent?”
“Impermanent, sir.” …
“Seeing this, a learned noble disciple grows disillusioned with eye contact, ear contact, nose contact, tongue contact, body contact, and mind contact.
Being disillusioned, desire fades away. …”