Musnad Ahmad 31:150

Abu Amir narrated to us, Zuhayr narrated to us, from Abdullah ibn Muhammad, from Hamzah ibn Abi Sa’id al-Khudri, from his father, who said: I heard the Messenger of Allah, peace and blessings of Allah be upon him, saying upon this pulpit: "What is the matter with people who say that the kinship of the Messenger of Allah, peace and blessings of Allah be upon him, will not benefit his people? Nay, by Allah, my kinship is connected in this world and the Hereafter. And I, O people, am a forerunner for you at the Basin (al-Hawd). When you come," a man will say: "O Messenger of Allah, I am so-and-so, son of so-and-so," and another will say: "I am so-and-so, son of so-and-so." He will say to them: "As for the lineage, I have recognized it, but you introduced (innovations) after me and turned back on your heels."