[357] Now at that time semen was emitted from a certain bhikkhu while he was having his thigh rubbed [by another]. He was remorseful … "There is no offense, bhikkhu, for one not intending emission." Now at that time a certain bhikkhu, intending emission, was having his thigh rubbed and semen was emitted … semen was not emitted. He was remorseful … "There is no offense of saṅghādisesa, bhikkhu; there is an offense of thullaccaya."
[Translator's note: In the second paragraph the Pali's own elision (pe) compresses two distinct cases and rulings — where semen was emitted, the (elided) ruling is an offense of saṅghādisesa; where semen was not emitted, the ruling given is an offense of thullaccaya. The two clauses are not contradictory but belong to separate cases.]
English translation from the Pali (Siam Raṭṭha edition) — under review, not for citation.