Muwatta Malik 139
موطأ مالك#139SahihYahya related to me from Malik from Hisham ibn Urwa from his father that A'isha, the wife of the Prophet, may Allah bless him and grant him peace, said, "An infant boy was brought to the Messenger of Allah, may Allah bless him and grant him peace, and it urinated on him. The Messenger of Allah, may Allah bless him and grant him peace, called for some water and rubbed over the urine with it
Scholarly Authentication
We show the most cautious grade (weakest-wins) as the overall label. Individual scholars graded it as follows:
Salim al-HilaliSahih
In-book reference: 2:108