(27) باب قُرْبِ السَّاعَةِ
'A'isha reported that when the desert Arabs came to Allah's Messenger (ﷺ) they asked about the Last Hour as to when that would come. And he looked towards the youngest amongst them and said:
If he lives he would not grow very old that he would find your Last Hour coming to you (he would see you dying).
Reference: Sahih Muslim 2952
In-book reference: Book 54, Hadith 172
USC-MSA web (English) reference(deprecated numbering scheme): Book 41, Hadith 7050