How a Musim defends his brother's honor?

Islam is a religion of peace, love and compassion. Lies, unjustified suspicion, backbiting, slander and gossips are totally alien to Islam. In fact they are considered amongst the most destructive of major sins. Continue after the cut... This is so because these sins sow enmity and discord among the Muslim community (Ummah) and lead to its destruction. They cause hostilities between people of the same household, and between neighbors, friends and relatives. Islam states that our relationship with mankind should be one of sincerity and responsibility. It should be one where we have respect for the honor, reputation and privacy of others. This beautifull relgion teaches us that we are not only held accountable for our own attitudes and actions but also for anything else over which we have control or influence over, in our society or the world around us. Those who worship Allah should care for each other in every way; the Muslim community should sustain best moral values of the faith: Mercy, compassion, fear of Allah, piety, and justice. Allah ordered Muslims to defend, help and stand by each other, "strong against unbelievers but compassionate amongst each other"[Qur’an 48:29]. A Muslim is required to defend his brother when someone talks about him behind his back. In Islam, Muslims should not do injustice to others nor do they tolerate any injustice to themselves.In their love and concern for each other, all Muslims are like one body, as Prophet Muhammad (pbuh) said: “when any part of the body suffers, the whole body feels the pain”.(Sahih Muslim) Allah has promised for the one who defends his absent brother with a great reward and promised to protect him from the fire. Abu Ad-Darda narrated that Prophet Muhammad (pbuh) said: "The one who rebuts another from backbiting has protected himself from the fire." Defending (Rebutting) backbiting is a characteristic of a believer. Allah says in the holy Qur’an: (And when they hear Al-Laghw (dirty, false, evil vain talk), they withdraw from it and say: "To us our deeds, and to you your deeds. Peace be to you. We seek not the ignorant.)(28:55) The believer knows that the devil wants to destroy him because he rejects backbiting by rebutting it. If he cannot change the topic of conversation he should dislike it in his heart and leave the gathering, remembering Allah's saying: (...And if Shaitan(evel) causes you to forget, then after the remembrance sit not you in the company of those people who are the Zalimun (unfair, wrong-doers,etc..)(6:68) Also, Prophet Muhammad advised Muslims to love each other, he said: "...no one believes until he loves for his brother what he loves for himself."(Muslim) Islam teaches us that if people are being ridiculed or backbitted in our presence, we should defend their honor. If we neglect this, we shall deprive ourselves of ever needed help and mercy from God. Prophet Muhammad (pbuh) said: “If a man's Muslim brother is slandered in your presence, and you are capable of defending him and you do so, God will defend you in this world and in the next. But if he fails to defend him, God will destroy him in this world and the next.”(Baghawi).