Theravāda Vinaya
Mahāvibhaṅga
Sekhiyakaṇḍa
Pādukavagga
Sekhiyā 71: Pacchatogamanasikkhāpada
Tena samayena buddho bhagavā sāvatthiyaṃ viharati jetavane anāthapiṇḍikassa ārāme. Tena kho pana samayena chabbaggiyā bhikkhū pacchato gacchantā purato gacchantassa dhammaṃ desenti … pe ….
“Na pacchato gacchanto purato gacchantassa agilānassa dhammaṃ desessāmīti sikkhā karaṇīyā”ti. (71:216)
Na pacchato gacchantena purato gacchantassa agilānassa dhammo desetabbo. Yo anādariyaṃ paṭicca pacchato gacchanto purato gacchantassa agilānassa dhammaṃ deseti, āpatti dukkaṭassa.