Musannaf Ibn Abi Shayba 37:452

Abu Khalid al-Ahmar narrated to us, from Dawud, from Abu Nadra, from Abu Sa’id, who said: When the Messenger of Allah (may Allah bless him and grant him peace) returned from Tabuk, they asked him about the Hour. The Messenger of Allah (may Allah bless him and grant him peace) said: "One hundred years from today, there will not remain upon the earth a breathing soul."