Vinaya Pitaka - Monastic Rules
Bhikkhu Vibhanga - Sekhiya 73: Not to defecate or urinate standing up unless required by medical reasons.
- Translated from the Pali by I.B. Horner.
… in Anāthapiṇḍika’s monastery. Now at that time the group of six monks eased themselves standing
‘I will not ease myself standing if not ill,’ is a training to be observed."
One must not ease oneself standing if not ill. Whoever out of disrespect eases himself standing if not ill, there is an offence of wrong-doing.
There is no offence if it is unintentional, … if he is the first wrong-doer.
1 tena samayena buddho bhagavā sāvatthiyaṃ viharati jetavane anāthapiṇḍikassa ārāme. tena kho pana samayena chabbaggiyā bhikkhū ṭhitā uccārampi passāvampi karonti … pe … .
2 "na ṭhito agilāno uccāraṃ vā passāvaṃ vā karissāmīti sikkhā karaṇīyā"ti. (73:218)
3 na ṭhitena agilānena uccāro vā passāvo vā kātabbo. yo anādariyaṃ paṭicca ṭhito agilāno uccāraṃ vā passāvaṃ vā karoti, āpatti dukkaṭassa.