عَن عَبْد اللّٰه، قَالَ صَلَّى لَنَا رَسُولُ اللّٰه صلى اللّٰه عليه وسلم لَيْلَةً صَلاَةَ الْعِشَاءِ ـ وَهْىَ الَّتِي يَدْعُو النَّاسُ الْعَتَمَةَ ـ ثُمَّ انْصَرَفَ فَأَقْبَلَ عَلَيْنَا فَقَالَ: أَرَأَيْتُمْ لَيْلَتَكُمْ هَذِهِ فَإِنَّ رَأْسَ مِائَةِ سَنَةٍ مِنْهَا لاَ يَبْقَى مِمَّنْ هُوَ عَلَى ظَهْرِ الأَرْضِ أَحَدٌ.
Hazrat Abdullahra reported that, “Allah’s Messengersa led us in the Isha prayer one evening – the prayer the people refer to as al-‘Atamah. After completing the prayer, he turned to us and declared, ‘Do you comprehend the significance of this night? One hundred years from now, none of those who are upon the earth this evening will remain alive.’”
(Sahih al-Bukhari, Kitab mawaqiti s-salat, Bab dhikri l-‘isha’i wa l-‘atamati wa man ra’ahu wasi‘an, Hadith 564)