sn.35.112 Saṁyutta Nikāya (Linked Discourses)

Complete Understanding of the Exterior

“Mendicants, without directly knowing and completely understanding sights …
sounds …
smells …
tastes …
touches …
thoughts, without dispassion for them and giving them up, you can’t end suffering.
By directly knowing and completely understanding sights …
sounds …
smells …
tastes …
touches …
thoughts, having dispassion for them and giving them up, you can end suffering.”