Forms of SufferingDukkhatāsutta

“Mendicants, there are these three forms of suffering.“Tisso imā, bhikkhave, dukkhatā. What three?Katamā tisso? The suffering inherent in painful feeling; the suffering inherent in conditions; and the suffering inherent in perishing.Dukkhadukkhatā, saṅkhāradukkhatā, vipariṇāmadukkhatā— These are the three forms of suffering.imā kho, bhikkhave, tisso dukkhatā.

The noble eightfold path should be developed for the direct knowledge, complete understanding, finishing, and giving up of these three forms of suffering.”Imāsaṁ kho, bhikkhave, tissannaṁ dukkhatānaṁ abhiññāya pariññāya parikkhayāya pahānāya …pe… ayaṁ ariyo aṭṭhaṅgiko maggo bhāvetabbo”ti.