sn.35.100 Saṁyutta Nikāya (Linked Discourses)
Retreat
“Mendicants, meditate in retreat.A mendicant in retreat truly understands.
What do they truly understand?
They truly understand that the eye is impermanent.
They truly understand that sights …
eye consciousness …
eye contact …
the pleasant, painful, or neutral feeling that arises conditioned by mind contact is impermanent.
Mendicants, meditate in retreat.
A mendicant in retreat truly understands.”