Musannaf Ibn Abi Shayba 37:531

Abu Mu'awiyah narrated to us, from al-A'mash, from 'Atiyyah, from Abu Sa'id, who said: The Messenger of Allah (may Allah bless him and grant him peace) said: "A man from my household will emerge at a time when time has been severed and tribulations have appeared. His giving will be in handfuls."