Sahih al-Bukhari 7020
Narrated Salim's father:
about the Prophet's dream in which he has seen Abu Bakr and `Umar: The Prophet (ﷺ) said, "I saw (in a 
dream) that the people had gathered. Then Abu Bakr stood up and pulled out one or two buckets full 
of water (from a well) and there was weakness in his pulling -- may Allah forgive him. Then Ibn Al- 
Khattab stood up, and the bucket turned into a very large one and I have never seen any strong man 
among the people doing such a hard job. He pulled out so much water that the people (drank to their 
satisfaction) and watered their camels to their fill, (and then after quenching their thirst) they sat 
beside the water."
حَدَّثَنَا أَحْمَدُ بْنُ يُونُسَ، حَدَّثَنَا زُهَيْرٌ، حَدَّثَنَا مُوسَى، عَنْ سَالِمٍ، عَنْ أَبِيهِ، عَنْ رُؤْيَا النَّبِيِّ، صلى الله عليه وسلم فِي أَبِي بَكْرٍ وَعُمَرَ قَالَ ‏
"‏ رَأَيْتُ النَّاسَ اجْتَمَعُوا فَقَامَ أَبُو بَكْرٍ فَنَزَعَ ذَنُوبًا أَوْ ذَنُوبَيْنِ، وَفِي نَزْعِهِ ضَعْفٌ وَاللَّهُ يَغْفِرُ لَهُ، ثُمَّ قَامَ ابْنُ الْخَطَّابِ، فَاسْتَحَالَتْ غَرْبًا فَمَا رَأَيْتُ مِنَ النَّاسِ يَفْرِي فَرْيَهُ، حَتَّى ضَرَبَ النَّاسُ بِعَطَنٍ ‏"‏‏.‏