When I post an argument or disagreement there are those on this forum who instead of responding with something along the lines of:
I disagree, I see it like this (opinion). Would you like to provide some reference material for the original argument?
Then when you provide sources, they didn't mean they wanted sources (which according to dictionary.com is a list of materials) but rather they wanted you to source your statements (which differs in that it means providing exact locations in your source materials that support each statement in your post).
Then they turn the entire discussion into a discussion about "your evasion on sources" instead of the material they were uncomfortable with before.