Hadith 303
Chapter 189: Urine Of A Boy Who Does Not Yet Eat Food - كتاب الطهارة
أَخْبَرَنَا قُتَيْبَةُ، عَنْ مَالِكٍ، عَنْ هِشَامِ بْنِ عُرْوَةَ، عَنْ أَبِيهِ، عَنْ عَائِشَةَ، قَالَتْ أُتِيَ رَسُولُ اللَّهِ صلى الله عليه وسلم بِصَبِيٍّ فَبَالَ عَلَيْهِ فَدَعَا بِمَاءٍ فَأَتْبَعَهُ إِيَّاهُ .
It was narrated that 'Aishah said:
"A small boy was brought to the Messenger of Allah (ﷺ) and he urinated on him, so he called for water and poured it on the place where the urine was."
Reference : Sunan an-Nasa'i 303
In-book reference : Book 1, Hadith 304