Musnad Ahmad 1012:104

Al-Hakam ibn Nafi’ narrated to us, Isma’il ibn ‘Ayyash narrated to us, from Yazid ibn Sa’id, from Abu ‘Ata Yazid ibn ‘Ata al-Saksaki, from Mu’adh ibn Sa’d al-Saksaki, from Junadah ibn Abi Umayyah, that he heard ‘Ubadah ibn al-Samit mentioning that a man came to the Prophet, peace and blessings of Allah be upon him, and said: "O Messenger of Allah, what is the duration of ease for your nation?" He did not reply to him anything until he asked him three times, and each time he did not answer him. Then the man turned away. Then the Prophet, peace and blessings of Allah be upon him, said: "Where is the questioner?" So they brought him back to him. He said: "You have asked me about something that no one from my nation has asked me about. The duration of ease for my nation is one hundred years." He said it twice or three times. The man said: "O Messenger of Allah, is there any sign, mark, or indication for that?" He said: "Yes. The sinking of the earth, the tremors, and the sending of the devils to incite people."