The Interior as Suffering Ajjhattāyatanadukkhasutta

“Mendicants, the eye, ear, nose, tongue, body, and mind are suffering. “Cakkhu, bhikkhave, dukkhaṁ …pe… jivhā dukkhā …pe… mano dukkho.

Seeing this … Evaṁ passaṁ …pe… They understand: ‘… there is nothing further for this place.’” nāparaṁ itthattāyāti pajānātī”ti.