Sahih al-Bukhari 189
صحيح البخاري#189Sahihحَدَّثَنَا عَلِيُّ بْنُ عَبْدِ اللَّهِ، قَالَ حَدَّثَنَا يَعْقُوبُ بْنُ إِبْرَاهِيمَ بْنِ سَعْدٍ، قَالَ حَدَّثَنَا أَبِي، عَنْ صَالِحٍ، عَنِ ابْنِ شِهَابٍ، قَالَ أَخْبَرَنِي مَحْمُودُ بْنُ الرَّبِيعِ، قَالَ وَهُوَ الَّذِي مَجَّ رَسُولُ اللَّهِ صلى الله عليه وسلم فِي وَجْهِهِ وَهْوَ غُلاَمٌ مِنْ بِئْرِهِمْ. وَقَالَ عُرْوَةُ عَنِ الْمِسْوَرِ وَغَيْرِهِ يُصَدِّقُ كُلُّ وَاحِدٍ مِنْهُمَا صَاحِبَهُ وَإِذَا تَوَضَّأَ النَّبِيُّ صلى الله عليه وسلم كَادُوا يَقْتَتِلُونَ عَلَى وَضُوئِهِ.
Narrated Ibn Shihab:Mahmud bin Ar-Rabi` who was the person on whose face the Prophet (ﷺ) had ejected a mouthful of water from his family's well while he was a boy, and `Urwa (on the authority of Al-Miswar and others) who testified each other, said, "Whenever the Prophet (ﷺ) , performed ablution, his companions were nearly fighting for the remains of the water
Scholarly Authentication
The label above is the grade most of these scholars gave — one dissenting opinion no longer speaks for all of them. If any scholar calls a narration fabricated, that verdict is shown instead, whatever the others say. Each scholar's own wording:
Every narration in Sahih al-Bukhari is accepted as Sahih (authentic) by the established status of the book.
In-book reference: 4:55