Chofetz Chaim Daily 15 Teves 8:1 Asur to say Avak rechilus – negative implication (e.g. to tell R how ploni said lets not talk about what R did). 2) Praise that will cause hard feelings is also avak rechilus (e.g. to praise one before his spouse or partner about their charity giving; it will make the other think they’re wasting their money). 3) Asur to tell someone who refused you a favor, ploni told me that you did HIM similar favor because it will make him upset at ploni.