Sahih al-Bukhari, Book 81, Hadith 11 (In-Book) ⓘ
Narrated Mahmud bin Ar-Rabi'a: I remember that the Allah's Messenger took water from a bucket (which was in our home used for getting water out of well) with his mouth (and threw it on my face).
حَدَّثَنَا مُعَاذُ بْنُ أَسَدٍ، أَخْبَرَنَا عَبْدُ اللَّهِ، أَخْبَرَنَا مَعْمَرٌ، عَنِ الزُّهْرِيِّ، قَالَ أَخْبَرَنِي مَحْمُودُ بْنُ الرَّبِيعِ، وَزَعَمَ، مَحْمُودٌ أَنَّهُ عَقَلَ رَسُولَ اللَّهِ صلى الله عليه وسلم وَقَالَ وَعَقَلَ مَجَّةً مَجَّهَا مِنْ دَلْوٍ كَانَتْ فِي دَارِهِمْ.
also referenced under: Hadith 6422 (DarusSalam) & Volume 8, Book 76, Hadith 430 (USC-MSA)