Sahih Bukhari Volume 1, Book 9, Hadith 601

حَدَّثَنَا أَبُو الْيَمَانِ، قَالَ أَخْبَرَنَا شُعَيْبٌ، عَنِ الزُّهْرِيِّ، قَالَ حَدَّثَنِي سَالِمُ بْنُ عَبْدِ اللَّهِ بْنِ عُمَرَ، وَأَبُو بَكْرِ بْنُ أَبِي حَثْمَةَ أَنَّ عَبْدَ اللَّهِ بْنَ عُمَرَ، قَالَ صَلَّى النَّبِيُّ صلى الله عليه وسلم صَلاَةَ الْعِشَاءِ فِي آخِرِ حَيَاتِهِ، فَلَمَّا سَلَّمَ قَامَ النَّبِيُّ صلى الله عليه وسلم فَقَالَ ‏"‏ أَرَأَيْتَكُمْ لَيْلَتَكُمْ هَذِهِ فَإِنَّ رَأْسَ مِائَةٍ لاَ يَبْقَى مِمَّنْ هُوَ الْيَوْمَ عَلَى ظَهْرِ الأَرْضِ أَحَدٌ ‏"‏‏.‏ فَوَهِلَ النَّاسُ فِي مَقَالَةِ رَسُولِ اللَّهِ ـ عَلَيْهِ السَّلاَمُ ـ إِلَى مَا يَتَحَدَّثُونَ مِنْ هَذِهِ الأَحَادِيثِ عَنْ مِائَةِ سَنَةٍ، وَإِنَّمَا قَالَ النَّبِيُّ صلى الله عليه وسلم ‏"‏ لاَ يَبْقَى مِمَّنْ هُوَ الْيَوْمَ عَلَى ظَهْرِ الأَرْضِ ‏"‏ يُرِيدُ بِذَلِكَ أَنَّهَا تَخْرِمُ ذَلِكَ الْقَرْنَ

Narrated By 'Abdullah bin 'Umar : The Prophet prayed one of the 'Isha prayer in his last days and after finishing it with Taslim, he stood up and said, "Do you realize (the importance of) this night? Nobody present on the surface of the earth to-night would be living after the completion of one hundred years from this night." The people made a mistake in grasping the meaning of this statement of Allah's Apostle and they indulged in those things which are said about these narrators (i.e. some said that the Day of Resurrection will be established after 100 years etc.) But the Prophet said, "Nobody present on the surface of earth tonight would be living after the completion of 100 years from this night"; he meant "When that century (people of that century) would pass away."