Narrated AbuHurayrah (RadhiyAllahu anha)
*Allah’s Apostle* (peace be upon him) said : Do you know what is backbiting ? They (the Companions) said : Allah and His Apostle (peace be upon him) know best . Thereupon he (the Prophet) said : Backbiting implies your talking about your brother in a manner which he does not like . It was said to him : What is your opinion about this that if I actually find that failing in my brother which I made a mention of ? He said : If that failing is actually found in him what you assert , you in fact backbited him , and if that is not in him it is a slander .
Sahih Muslim Hadith - 1183
May Allaah aza wah jall protect is from this sin of slander and backbiting , Ameen..!