Allaah Says in the Quran what means: "And why, when you heard it, did you not say: 'It is not for us to speak of this. Exalted are You, [O Allaah]; this is a great slander?'" [Quran 24:16]
Backbiting & Slander Defined
Prophet Muhammad once asked: "Do you know what backbiting is?" His companions replied: "Allaah and His Messenger know best." He then said: "It is to say something about your brother that he would dislike." Someone asked: "But what if what is said is true?" The Messenger of Allaah replied: "If what you say about him is true, then you have backbitten him, but if it is not true then you have slandered him." [Muslim]
Islam is a religion of peace, love and compassion. Lies, suspicion, backbiting, slander and gossip are totally alien to Islam. In fact, they are considered amongst the most destructive of major sins. This is so because these sins sow enmity and discord among the Muslim Ummah (nation) and lead to its destruction. They cause hostilities between people of the same household, and between neighbours, friends and relatives.
Islam demands that our relationship with mankind be one of sincerity and responsibility. It should be one where we have respect for the honour, reputation and privacy of others. Islam teaches us that we are not only held accountable for our attitudes and actions, but also for anything over which we have control or influence in our society or the world around us.
Allaah has Forbidden the Believers from Backbiting
Allaah states in the Quran (what means): "O you who have believed! Avoid much [negative] assumption. Indeed, some assumption is sin. And do not spy or backbite each other. Would one of you like to eat the flesh of his brother when dead? You would detest it. And fear Allaah; indeed, Allaah is Accepting of repentance and Merciful." [Quran 49:12]