Lasuṇavagga

Vinayapiṭaka · Parivāra · Vol. 8 · Section 683

[683] Discarding excrement, urine, spittle, rubbish, or food scraps on green plants, [a bhikkhunī] incurs two offenses (āpatti): in the effort of discarding, an offense of wrong-doing (dukkaṭa); when it has been discarded, an offense entailing expiation (pācittiya).

English translation from the Pali (Siam Raṭṭha edition) — under review, not for citation.