What is the ruling on some individuals slandering, insulting, and fabricating lies about the Companions and scholars, and assailing the established principles of Islam? And is it permissible to accuse them of wickedness and deviation? Furthermore, is insulting them or hearing their insult and agreeing to it unlawful, especially given the saying, "There is no backbiting for a wicked person"?

The ruling on those who defame varies depending on the subject of the defamation. Defaming the immutable tenets and fundamentals of Islam is not like acquiring knowledge, and slandering the Companions has a different ruling, for reviling all of them is disbelief, but not everyone who reviles a Companion commits an act of disbelief. These sins range from disbelief that expels one from the fold of Islam to major sins. One can refer to the fatwas related to each specific case for a detailed ruling.