Sahih Bukhari Volume 4, Book 61, Hadith 3636

حَدَّثَنَا عَبْدُ الرَّحْمَنِ بْنُ شَيْبَةَ، حَدَّثَنَا عَبْدُ الرَّحْمَنِ بْنُ الْمُغِيرَةِ، عَنْ أَبِيهِ، عَنْ مُوسَى بْنِ عُقْبَةَ، عَنْ سَالِمِ بْنِ عَبْدِ اللَّهِ، عَنْ عَبْدِ اللَّهِ ـ رضى الله عنه ـ أَنَّ رَسُولَ اللَّهِ صلى الله عليه وسلم قَالَ ‏"‏ رَأَيْتُ النَّاسَ مُجْتَمِعِينَ فِي صَعِيدٍ، فَقَامَ أَبُو بَكْرٍ فَنَزَعَ ذَنُوبًا أَوْ ذَنُوبَيْنِ، وَفِي بَعْضِ نَزْعِهِ ضَعْفٌ، وَاللَّهُ يَغْفِرُ لَهُ، ثُمَّ أَخَذَهَا عُمَرُ، فَاسْتَحَالَتْ بِيَدِهِ غَرْبًا، فَلَمْ أَرَ عَبْقَرِيًّا فِي النَّاسِ يَفْرِي فَرِيَّهُ، حَتَّى ضَرَبَ النَّاسُ بِعَطَنٍ ‏"‏‏.‏ وَقَالَ هَمَّامٌ عَنْ أَبِي هُرَيْرَةَ عَنِ النَّبِيِّ صلى الله عليه وسلم ‏"‏ فَنَزَعَ أَبُو بَكْرٍأَوْ ذَنُوبَيْنِ ‏"‏‏

Narrated By 'Abdullah : Allah's Apostle said, "I saw (in a dream) the people assembled in a gathering, and then Abu Bakr got up and drew one or two buckets of water (from a well) but there was weakness in his drawing. May Allah forgive him. Then 'Umar took the bucket and in his hands it turned into a very large bucket. I had never seen anyone amongst: the people who could draw the water as strongly as 'Umar till all the people drank their fill and watered their camels that knelt down there.