In my faith tradition, we have The Ethics of The Fathers where they wrote,“ Slander kills three people, the one who speaks it, the one who listens to it and the one about whom it is spoken.”
This proposition is indeed part of our Jewish tradition, as Maimonides makes clear in Mishneh Torah, Hilchot De'ot 7:3 -- but it is not to be found anywhere in Pirkei Avot, The Ethics of the Fathers.