Gheebat (Backbiting ) transfers the Good Deeds

The Messenger of Allah (S) is reported saying that a person will be brought for accounting in Qiyāma and handed his scroll of deeds. When he sees the good deeds performed by him missing from his record he would say, ‘O Allah! This is not my record because I cannot find the good deeds performed by me in it.’ He will be told, ‘Your Lord does not err or forget, your good deeds have disappeared due to backbiting about the people.’ Then another person will be brought and given his record of deeds. When he finds therein good deeds that he had never performed he shall say, ‘O Allah! This is not my scroll of deeds. Because I find recorded therein such good deeds as I had never performed’. So he shall be informed, “These are the good deeds of that certain person who back-bited about you and as a recompense his good deeds have been given to you.”  Reference : Greater Sins Volume 3