D&DBeyond is the official online source for D&D 5e. If not more people, then at least a significant portion of people, have access D&DBeyond rather than the PHB. When quoting rules excepts can we quote from D&DBeyond or do we need to find the equivalent in the PHB?
I ask because I posted a question quoting D&DBeyond, my comment was edited to include the PHB quote, and when I asked why this edit was done I was told that rules come from the PHB and my comment was deleted.
The ideal is to have both a Beyond link and a book page number—but ultimately, as long as you actually include the relevant content in your answer (quotation or paraphrase), it’s fine to indicate where that came from however you like. Other users may edit in other ways of finding it.
And if someone makes up a rule that isn’t actually where they say it is, that answer will get comments and downvotes, so readers will know. So if instead an answer gets upvotes and no one comments that the quoted text is missing in the sources, we can be pretty sure it’s there even if we don’t have access to the same source.
