Musnad Ahmad 5:156

'Ali ibn Hafs narrated to us, Waraqa informed us, from Mansur, from al-Minhal, from Nu'aym ibn Dujajah, who said: Abu Mas'ud entered upon 'Ali and said: "Are you the one who says that the Messenger of Allah (may Allah bless him and grant him peace) said: 'One hundred years will not pass over the people while there is a living soul upon the earth'?" [He replied:] "The Messenger of Allah (may Allah bless him and grant him peace) only said: 'One hundred years will not pass over the people while there is a living soul upon the earth from among those who are alive today.' And the prosperity of this nation is after the hundred."