Abu Qabil said that Abdullah bin Amr bin al-As told him that Mu'adh bin Jabal informed him; he said: The Messenger of Allah (peace and blessings be upon him) came out to us with his colour changed, and he (peace and blessings be upon him) said: "I am Muhammad. I have been given the openings and the conclusions of speech. Obey me as long as I am among you, and when I am taken away, then hold fast to the Book of Allah, the Mighty and Majestic; regard its lawful as lawful and its unlawful as unlawful. This Book has come to you with mercy and comfort; it is a Book from Allah decreed beforehand. Trials will come to you like portions of the dark night; whenever one group goes, another will come. The order of prophethood will change and turn into kingship. May Allah have mercy on the one who takes it with its right and leaves it just as he entered it. O Mu'adh! Remember and keep counting." When I reached five, he (peace and blessings be upon him) said: "Yazid, may Allah not bless Yazid." Then tears flowed from his eyes (peace and blessings be upon him), and then he said: "I have been given the news of Husayn's death, his soil has been brought to me, and I have been told of his killer. By the One in whose hand is my soul, he will not be killed among a people who do not protect him except that Allah will cause discord between their breasts and hearts, set the worst of them over them, and divide them into factions." Then he said: "Alas for the young ones of the family of Muhammad (peace and blessings be upon him) at the hands of a luxury-loving caliph who will kill those who come after me and those who come after them. O Mu'adh! Remember." When I reached ten, he said: "Al-Walid is the name of a Pharaoh; in his time he will be the demolisher of the laws of Islam. A man from a household whose sword Allah will draw, and then there will be no sheath for it; and the people will differ and become like this" (and he (peace and blessings be upon him) interlaced his fingers). Then he said: "After the year 120 AH there will be sudden death and swift killing; in it will be their destruction, and a man from the offspring of al-Abbas will become ruler over them."
Hadith Referenceالمعجم الكبير للطبراني / باب الحاء / 2848