Musnad Ahmad 26:24

Sufyan ibn 'Uyaynah narrated to us, 'Asim narrated to us, from Zirr, from 'Abdullah, from the Prophet, peace and blessings of Allah be upon him: "The Hour will not be established until a man from the people of my house rules, whose name matches my name." 'Abdullah said: My father said: "He narrated it to us in his house, in his room. I think some of the children of Ja'far ibn Yahya, or Yahya ibn Khalid ibn Yahya, asked him about it."