It is narrated from Sayyida Umm Kulthum bint Uqbah (may Allah be pleased with her), who was the wife of Sayyiduna Abdur Rahman bin Awf (may Allah be pleased with him) and the half-sister of Uthman bin Affan, that indeed the Prophet (peace and blessings be upon him) said: "That person is not a liar who reconciles between two people, so (for this purpose) he says a good word or conveys a good word."
Hadith Referenceمسند الشهاب / 1204
Hadith Gradingمحدثین:صحيح
Hadith Takhrij«صحيح ، وأخرجه البخاري فى «صحيحه» برقم: 2692، ومسلم فى «صحيحه» برقم: 2605، وأبو داود فى «سننه» برقم: 4920، 4921، والترمذي فى «جامعه» برقم: 1938، والطبراني فى «الصغير» برقم: 189، 282، وأحمد فى «مسنده» برقم: 27912»