It is narrated from Sayyiduna Ali (may Allah be pleased with him) concerning the saying of Allah Almighty: "You are only a warner, and for every people there is a guide" that he said: "The warner is the Messenger of Allah (peace and blessings be upon him), and the guide is a man from Banu Hashim."
Imam al-Tabarani (may Allah have mercy on him) said: "No one narrated this hadith from al-Suddi except al-Muttalib bin Ziyad; Uthman is alone in narrating it."
Hadith Referenceالمعجم الأوسط / باب الميم / 7780
Hadith Takhrij«أخرجه الضياء المقدسي فى «الأحاديث المختارة» برقم: 668، 669، والحاكم فى «المستدرك» برقم: 4671، وأحمد فى «مسنده» برقم: 1056، والطبراني فى «الصغير» برقم: 739، والطبراني فى «الأوسط» برقم: 1361، 4923»