As we are moving forward, our site is facing many answers which do not have sources or they are based on user's point of view.

Whenever I have time, I am editing the "copy-paste" posts with the source from where the content is copied.

Here are some examples:

* [revision1](https://hinduism.stackexchange.com/posts/2552/revisions)
* [revision2](https://hinduism.stackexchange.com/posts/2545/revisions)
* [revision3](https://hinduism.stackexchange.com/posts/2343/revisions)

But I have no idea what exactly I should comment to that user..

Please suggest a standard comment to let user know to provide source always. and also I am thinking of a comment which has links to some meta posts like "[copy-paste](https://hinduism.meta.stackexchange.com/q/48/93)" issue.