"[I]f anyone in sound health has castrated sterilized himself, it behooves that such a one, if enrolled among the clergy, should cease [from his ministry], and that from henceforth no such person should be promoted. But, as it is evident that this is said of those who willfully do the thing and presume to castrate themselves, so if any have been made eunuchs by barbarians, or by their masters, and should otherwise be found worthy, such men this canon admits to the clergy."
January 1, 1970
https://en.wikiquote.org/wiki/Christian_views_on_birth_control