Sekhiyasikkhābada

Vinayapiṭaka · Bhikkhunī Vibhaṅga · Vol. 3 · Section 500

[500] Excrement, urine, or spittle should not be passed in water by one who is not ill. She who, out of disrespect, not being ill, passes excrement, urine, or spittle in water, commits an offence of wrong-doing (dukkaṭa).

English translation from the Pali (Siam Raṭṭha edition) — under review, not for citation.