[354] Now at that time, as a certain bhikkhu (bhikkhu), having taken hold of his foreskin (vatthi), was urinating, semen was emitted. He was remorseful (kukkucca) … "There is no offence (anāpatti), bhikkhu, for one who does not intend emission."
Now at that time, as a certain bhikkhu who intended emission (mocanādhippāya), having taken hold of his foreskin, was urinating, semen was emitted … [the Pali here elides the intervening passage, which includes the remorse, the report to the Blessed One, and the verdict for this case, before resuming with the parallel case:] … semen was not emitted. He was remorseful … "There is no offence, bhikkhu, entailing formal meeting of the Saṅgha (saṅghādisesa); there is an offence of grave transgression (thullaccaya)."
English translation from the Pali (Siam Raṭṭha edition) — under review, not for citation.