Sunan an-Nasa'i 45
Sahih Graded by Abu Ghuddah Book of The Book of Purification · Hadith 45 of 5,758أَخْبَرَنَا إِسْحَاقُ بْنُ إِبْرَاهِيمَ، قَالَ أَنْبَأَنَا النَّضْرُ، قَالَ أَنْبَأَنَا شُعْبَةُ، عَنْ عَطَاءِ بْنِ أَبِي مَيْمُونَةَ، قَالَ سَمِعْتُ أَنَسَ بْنَ مَالِكٍ، يَقُولُ كَانَ رَسُولُ اللَّهِ صلى الله عليه وسلم إِذَا دَخَلَ الْخَلاَءَ أَحْمِلُ أَنَا وَغُلاَمٌ مَعِي نَحْوِي إِدَاوَةً مِنْ مَاءٍ فَيَسْتَنْجِي بِالْمَاءِ .
Anas bin Malik said:"When the Messenger of Allah (ﷺ) would go to the toilet, I and another boy like me would bring a small leather vessel of water and he would clean himself with water
References
Sunan an-Nasa'i 45
In-book: Book 1, Hadith 45 Source: hadith-api (fawazahmed0)