Sahih al-Bukhari, Book 3, Hadith 19 (In-Book) ⓘ
Narrated Mahmud bin Rabi`a: When I was a boy of five, I remember, the Prophet took water from a bucket (used for getting water out of a well) with his mouth and threw it on my face.
حَدَّثَنِي مُحَمَّدُ بْنُ يُوسُفَ، قَالَ حَدَّثَنَا أَبُو مُسْهِرٍ، قَالَ حَدَّثَنِي مُحَمَّدُ بْنُ حَرْبٍ، حَدَّثَنِي الزُّبَيْدِيُّ، عَنِ الزُّهْرِيِّ، عَنْ مَحْمُودِ بْنِ الرَّبِيعِ، قَالَ عَقَلْتُ مِنَ النَّبِيِّ صلى الله عليه وسلم مَجَّةً مَجَّهَا فِي وَجْهِي وَأَنَا ابْنُ خَمْسِ سِنِينَ مِنْ دَلْوٍ.
also referenced under: Hadith 77 (DarusSalam) & Volume 1, Book 3, Hadith 77 (USC-MSA)