If it’s something to sincerely warn others, this seems permissible.

Is it backbiting if i inform a person of a habit or an evil of someone that could actually harm him ? For example if i tell my sister or a friend to not believe everything mr. Xyz says because he lies ,then will it be considered backbiting? If it is then how are we to warn our beloved one of treacherous or evil people ? And what if the evil person is in family ?

Backbiting | July 27, 2017 4:04 am
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Does complaining about someone fall into backbiting? Or does it have limits? Sometimes ppl come to my mom to complain abt someone.. Usually they do it to let out their feelings. People also narrate things that has happened in their homes.. Arguments etc. The Intention is not for fun or to laugh at someone. But usually we end up learning about someone’s bad qualities
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Suppose we are three friends talking. Two talking about a persons fault who is known to them but unknown to me. Is it sin for me for hearing backbiting though I dont know that person?