It is narrated from Sayyiduna Abdullah bin Mas'ud (may Allah be pleased with him) that the Messenger of Allah (peace and blessings be upon him) said: "Follow the two who will come after me, namely Sayyiduna Abu Bakr and Sayyiduna Umar (may Allah be pleased with them both)."
Imam al-Tabarani (may Allah have mercy on him) said: "No one narrated this hadith from Sufyan (may Allah have mercy on him) except Ibn al-Mubarak (may Allah have mercy on him), and from Ibn al-Mubarak (may Allah have mercy on him) only Amr bin Ziyad al-Bahili, while Ibrahim bin Salm bin Rushayd is alone in narrating it."
Hadith Referenceالمعجم الأوسط / باب الميم / 7177
Hadith Takhrij«أخرجه الحاكم فى «المستدرك» برقم: 4482، والترمذي فى «جامعه» برقم: 3805، والطبراني فى «الكبير» برقم: 8426»