O you who believe! Avoid much suspicion; indeed some suspicions are sins. And spy not, neither backbite one another. Would one of you like to eat the Flesh of his dead brother? You would hate it (so hate backbiting). And fear Allah. Verily, Allah is the One Who forgives and accepts repentance, Most Merciful (surah Al-Hujurat 12) Narrated Abu Hurairah(ra): Allah's Messenger(saw) said, "Beware of suspicion, for suspicion in the worst of false tales; and do not look for other's faults, and do not do spying on one another, and do not practice Najsh and do not hate one another, and do not desert (stop talking to ) one another. And O Allah's worshippers! Be brothers! (Sahih Al-Bukhari) Narrated Ibn Abbas(ra): Allah's Messanger(saw) passed by two graves and said, "Both of them (persons in the grave) are being tortured, and they are not being tortured for a major sin. This one used not to save himself from being soiled with his urine, and the other used to go about with calumnies (among the people to rouse hostilities, e.g., one goes to a person and tells him that so and so says about him such and such evil things)." The Prophet (saw) then asked for a green branch of a date palm tree, split it into two pieces and planted one on each grave and said, "It is hoped that their punishment may be abated till those two pieces of the branch get dried." (Sahih Al-Bukhari) Narrated Hudhaifah(ra): I heard the Prophet (saw) saying, A Qattat will not enter Paradise." (Sahih Al-Bukari) A Qattat is a person who conveys disagreeable information from one person to another with the intention of causing harm and enmity between them. Najsh means to offer a high price for something in order to allure another customer who is interested in the thing