It is narrated from Sayyiduna Abdullah bin Mas'ud (may Allah be pleased with him): The Messenger of Allah (peace and blessings be upon him) said to me: "The world will not come to an end, or he said: the days will not come to an end, until a man from my household becomes ruler over the Arabs whose name matches my name."
Hadith Referenceالمعجم الكبير للطبراني / باب العين / 10186