Sahih al-Bukhari 2267
Narrated Ubai bin Ka`b:
Allah's Messenger (ﷺ) said, "Both of them (Moses and Al-Khadir) proceeded on till they reached a wall 
which was about to fall." Sa`d said [?? or Sa`id], "(Al-Khadir pointed) with his hands (towards the 
wall) and then raised his hands and the wall became straightened up." Ya`la said, "I think Sa`id [?? or 
Sa`d] said, 'He (Khadir) passed his hand over it and it was straightened up." (Moses said to him), "if 
you had wanted, you could have taken wages for it." Sa`id [?? or Sa`d] said, "Wages with which to 
buy food . "
حَدَّثَنَا إِبْرَاهِيمُ بْنُ مُوسَى، أَخْبَرَنَا هِشَامُ بْنُ يُوسُفَ، أَنَّ ابْنَ جُرَيْجٍ، أَخْبَرَهُمْ قَالَ أَخْبَرَنِي يَعْلَى بْنُ مُسْلِمٍ، وَعَمْرُو بْنُ دِينَارٍ، عَنْ سَعِيدِ بْنِ جُبَيْرٍ، يَزِيدُ أَحَدُهُمَا عَلَى صَاحِبِهِ، وَغَيْرُهُمَا قَالَ قَدْ سَمِعْتُهُ يُحَدِّثُهُ عَنْ سَعِيدٍ قَالَ قَالَ لِي ابْنُ عَبَّاسٍ ـ رضى الله عنهما ـ حَدَّثَنِي أُبَىُّ بْنُ كَعْبٍ قَالَ قَالَ رَسُولُ اللَّهِ صلى الله عليه وسلم ‏"‏ فَانْطَلَقَا فَوَجَدَا جِدَارًا يُرِيدُ أَنْ يَنْقَضَّ ‏"‏‏.‏ قَالَ سَعِيدٌ بِيَدِهِ هَكَذَا، وَرَفَعَ يَدَيْهِ فَاسْتَقَامَ، قَالَ يَعْلَى حَسِبْتُ أَنَّ سَعِيدًا قَالَ‏.‏ فَمَسَحَهُ بِيَدِهِ فَاسْتَقَامَ ‏{‏قَالَ‏}‏ ‏"‏لَوْ شِئْتَ لاَتَّخَذْتَ عَلَيْهِ أَجْرًا ‏"‏‏.‏ قَالَ سَعِيدٌ أَجْرًا نَأْكُلُهُ‏.‏