ديغا نيكايا 2:295
SUJATOYaṁ kho, bhikkhave, dukkhe ñāṇaṁ, dukkhasamudaye ñāṇaṁ, dukkhanirodhe ñāṇaṁ, dukkhanirodhagāminiyā paṭipadāya ñāṇaṁ.
Knowing about suffering, the origin of suffering, the cessation of suffering, and the practice that leads to the cessation of suffering.