Yahya related to me from Malik from Hisham ibn Urwa from his father that A'isha, the wife of the Prophet ﷺ said, "An infant boy was brought to the Messenger of Allah ﷺ and it urinated on him. The Messenger of Allah ﷺ called for some water and rubbed over the urine with it."  

عَنْ عَائِشَةَ زَوْجِ النَّبِيِّ ﷺ أَنَّهَا قَالَتْ أُتِيَ رَسُولُ اللَّهِ ﷺ بِصَبِيٍّ فَبَالَ عَلَى ثَوْبِهِ فَدَعَا رَسُولُ اللَّهِ ﷺ بِمَاءٍ فَأَتْبَعَهُ إِيَّاهُ  

Yahya related to me from Malik from Ibn Shihab from Ubaydullah ibn Abdullah ibn Utba ibn Masud from Umm Qays ibn Mihsan that she brought a baby boy of hers who was not yet eating food to the Messenger of Allah ﷺ and he sat it in his arms and it urinated on his garment, so the Messenger of Allah ﷺ called for some water and sprinkled over it but did not wash it.  

أَنَّهَا أَتَتْ بِابْنٍ لَهَا صَغِيرٍ لَمْ يَأْكُلِ الطَّعَامَ إِلَى رَسُولِ اللَّهِ ﷺ فَأَجْلَسَهُ فِي حَجْرِهِ فَبَالَ عَلَى ثَوْبِهِ فَدَعَا رَسُولُ اللَّهِ بِمَاءٍ فَنَضَحَهُ وَلَمْ يَغْسِلْهُ