1. Ambapālivagga

Ambapālisutta Evaṁ me sutaṁ— ekaṁ samayaṁ bhagavā vesāliyaṁ viharati ambapālivane. Tatra kho bhagavā bhikkhū āmantesi: “bhikkhavo”ti. “Bhadante”ti te bhikkhū bhagavato paccassosuṁ. Bhagavā etadavoca: “Ekāyanvāyaṁ, bhikkhave, maggo sattānaṁ visuddhiyā sokaparidevānaṁ samatikkamāya dukkhadomanassānaṁ atthaṅgamāya ñāyassa adhigamāya nibbānassa sacchikiriyāya, yadidaṁ—cattāro satipaṭṭhānā. Katame cattāro? Idha, bhikkhave, bhikkhu kāye kāyānupassī viharati ātāpī sampajāno satimā, vineyya loke abhijjhādomanassaṁ; vedanāsu vedanānupassī viharati ātāpī sampajāno satimā, vineyya loke abhijjhādomanassaṁ; citte cittānupassī viharati ātāpī sampajāno satimā, vineyya loke abhijjhādomanassaṁ; dhammesu dhammānupassī viharati ātāpī sampajāno satimā, vineyya loke abhijjhādomanassaṁ. Ekāyanvāyaṁ, bhikkhave, maggo sattānaṁ visuddhiyā sokaparidevānaṁ samatikkamāya dukkhadomanassānaṁ atthaṅgamāya ñāyassa adhigamāya nibbānassa sacchikiriyāya, yadidaṁ—cattāro satipaṭṭhānā”ti.