«والخبر: ما يصح أن يقال لقائله إنه صادق فيه، أو كاذب»
Khabar is speech concerning which one may appropriately say that its speaker spoke truthfully or falsely.
“سَافَرَ مُحَمَّدٌ”
“Muhammad travelled.”
This sentence asserts that Muhammad travelled. It can agree or disagree with what happened, and therefore can be true or false. Being a report and being a true report are different notions. Even a false assertion is still khabar because truth and falsity apply to its content.