It is narrated from Sayyiduna Ali (may Allah be pleased with him) that he said: "Al-Aswad Dhu al-Thudayyah is cursed on the tongue of Muhammad (peace and blessings be upon him)."
Imam al-Tabarani (may Allah have mercy on him) said: "This hadith, as a narration of Sayyiduna Buraydah (may Allah be pleased with him) from Sayyiduna Ali (may Allah be pleased with him), is narrated only with this chain; Abbad bin Ya'qub is alone in narrating it."
Hadith Referenceالمعجم الأوسط / باب الميم / 5447
Hadith Takhrij«أخرجه الطبراني فى «الصغير» برقم: 433، والطبراني فى «الأوسط» برقم: 3543»