Saṃyutta Nikāya 22 4. Natumhākavagga 40. Dutiyaanudhammasutta Sāvatthinidānaṃ. “Dhammānudhammappaṭipannassa, bhikkhave, bhikkhuno ayamanudhammo hoti yaṃ rūpe aniccānupassī vihareyya … pe … parimuccati dukkhasmāti vadāmī”ti. Aṭṭhamaṃ.