Verify hearsay before passing!

Only after you know a matter by yourself beyond any doubt, you should tell or teach about that to other persons. These persons in turn shall verify that matter themselves and pass it on to others. If a person doesn’t verify that, but believes in your words, it means that he has (blind) faith in you thinking that you have genuine experience about that matter! But it is always better for one and all to verify the matter they hear from others before believing it and/or passing it to others.