Lasuṇavaggasikkhābada

Vinayapiṭaka · Bhikkhunī Vibhaṅga · Vol. 3 · Section 158

[158] "Slapping (talaghātaka)" means: consenting to the contact, she gives a blow to her genitals (muttakaraṇa), even if only with a lotus petal — she commits an offense of pācittiya.

English translation from the Pali (Siam Raṭṭha edition) — under review, not for citation.