Sahih Muslim Book - 52, Hadith - 7411

وَحَدَّثَنِى حَجَّاجُ بْنُ الشَّاعِرِ حَدَّثَنَا سُلَيْمَانُ بْنُ حَرْبٍ حَدَّثَنَا حَمَّادٌ - يَعْنِى ابْنَ زَيْدٍ - حَدَّثَنَا مَعْبَدُ بْنُ هِلاَلٍ الْعَنَزِىُّ عَنْ أَنَسِ بْنِ مَالِكٍ أَنَّ رَجُلاً سَأَلَ النَّبِىَّ -صلى الله عليه وسلم- قَالَ مَتَى تَقُومُ السَّاعَةُ قَالَ فَسَكَتَ رَسُولُ اللَّهِ -صلى الله عليه وسلم- هُنَيْهَةً ثُمَّ نَظَرَ إِلَى غُلاَمٍ بَيْنَ يَدَيْهِ مِنْ أَزْدِ شَنُوءَةَ فَقَالَ « إِنْ عُمِّرَ هَذَا لَمْ يُدْرِكْهُ الْهَرَمُ حَتَّى تَقُومَ السَّاعَةُ ». قَالَ قَالَ أَنَسٌ ذَاكَ الْغُلاَمُ مِنْ أَتْرَابِى يَوْمَئِذٍ.

It was narrated from Anas bin Malik that a man asked the Prophet (s.a.w): "When will the Hour come?" The Messenger of Allah (s.a.w) remained silent for a while, then he looked at a boy who was in front of him, from (the tribe of) Azd Shanu'ah, and said: "If he lives, he will not grow old before the Hour comes." Anas said: "That boy was of my age at that time."