Theravāda Vinaya
Mahāvibhaṅga
Sekhiyakaṇḍa
Kabaḷavagga
41. Anāhaṭasikkhāpada
Tena samayena buddho bhagavā sāvatthiyaṃ viharati jetavane anāthapiṇḍikassa ārāme. Tena kho pana samayena chabbaggiyā bhikkhū anāhaṭe kabaḷe mukhadvāraṃ vivaranti … pe ….
“Na anāhaṭe kabaḷe mukhadvāraṃ vivarissāmīti sikkhā karaṇīyā”ti. (41:186)
Na anāhaṭe kabaḷe mukhadvāraṃ vivaritabbaṃ. Yo anādariyaṃ paṭicca anāhaṭe kabaḷe mukhadvāraṃ vivarati, āpatti dukkaṭassa.