Musnad Ahmad 1034:42

Muhammad ibn Ja'far narrated to us, Shu'bah narrated to us, from 'Adi ibn Thabit, from 'Abdullah ibn Yazid, from Hudhayfah, that he said: "The Messenger of Allah (ﷺ) informed me of what is to come until the Hour is established." There is nothing of it except that I asked him about it, except that I did not ask him what will cause the people of Medina to leave Medina.