Saññāsutta
Sāvatthiyaṁ viharati. “Taṁ kiṁ maññasi, rāhula, rūpasaññā niccā vā aniccā vā”ti? “Aniccā, bhante” … “saddasaññā …pe… gandhasaññā … rasasaññā … phoṭṭhabbasaññā … dhammasaññā niccā vā aniccā vā”ti? “Aniccā, bhante” … “evaṁ passaṁ, rāhula, sutavā ariyasāvako rūpasaññāyapi nibbindati …pe… saddasaññāyapi nibbindati … gandhasaññāyapi nibbindati … rasasaññāyapi nibbindati … phoṭṭhabbasaññāyapi nibbindati … dhammasaññāyapi nibbindati …pe… pajānātī”ti.
Perceptions
At Sāvatthī. “What do you think, Rāhula? Is perception of sights permanent or impermanent?” “Impermanent, sir.” … “… perception of sounds … perception of smells … perception of tastes … perception of touches … Is perception of ideas permanent or impermanent?” “Impermanent, sir.” … “Seeing this, a learned noble disciple grows disillusioned with the perception of sights, sounds, smells, tastes, touches, and ideas. …”