It is narrated from Sayyiduna Jabir (may Allah be pleased with him) that I heard the Prophet (peace and blessings be upon him) say, one month before his passing, that people ask me about the Hour (Day of Judgment), although its true knowledge is only with Allah. However, I swear by Allah that none of those alive today will remain alive after one hundred years.
Hadith Referenceمسند احمد / مسند المكثرين من الصحابة / 15128