TIPITAKA Volume 17 : PALI ROMAN Sutta Pitaka Vol 9 : Sutta. Saṃ. Kha.

[343] Sāvatthī . saddhāpabbajitassa bhikkhave kulaputtassa ayamanudhammo hoti yaṃ rūpe aniccānupassī vihareyya vedanāya . Saññāya . saṅkhāresu . viññāṇe aniccānupassī vihareyya .pe. Parimuccati dukkhasmāti vadāmīti.