Musnad Abu Ya'la al-Mawsili 161:8

Ibrahim ibn Sa'id al-Jawhari narrated to us, Muhammad ibn Rabi'ah narrated to us, from Kamil Abu al-'Ala', from Abu Salih, from Abu Hurayrah, who said: The Messenger of Allah (peace and blessings of Allah be upon him) said: "The lifespan of my nation is between sixty years and seventy years."