Ajjhattadukkhahetusutta
“Cakkhuṁ, bhikkhave, dukkhaṁ. Yopi hetu yopi paccayo cakkhussa uppādāya, sopi dukkho. Dukkhasambhūtaṁ, bhikkhave, cakkhu kuto sukhaṁ bhavissati …pe… jivhā dukkhā. Yopi hetu, yopi paccayo jivhāya uppādāya, sopi dukkho. Dukkhasambhūtā, bhikkhave, jivhā kuto sukhā bhavissati …pe… mano dukkho. Yopi hetu yopi paccayo manassa uppādāya, sopi dukkho. Dukkhasambhūto, bhikkhave, mano kuto sukho bhavissati. Evaṁ passaṁ …pe… nāparaṁ itthattāyā’ti pajānātī”ti.
Interior and Cause Are Suffering
“Mendicants, the eye is suffering. The cause and reason that gives rise to the eye is also suffering. Since the eye is produced by what is suffering, how could it be happiness? The ear … nose … tongue … body … mind is suffering. The cause and reason that gives rise to the mind is also suffering. Since the mind is produced by what is suffering, how could it be happiness? Seeing this … They understand: ‘… there is nothing further for this place.’”