Humayd bin Abd al-Rahman (may Allah have mercy on him) related that his mother, Sayyidah Umm Kulthum bint Uqbah (may Allah be pleased with her), told him that she heard the Messenger of Allah (peace and blessings be upon him) say: "The liar is not the one who makes peace between people, conveying something good or saying something good."
Hadith Referenceالمعجم الكبير للطبراني / مسند النساء / 21661