It was narrated that Umm Qais bint Mihsan said:"I came to the Messenger of Allah with a son of mine who was not yet eating solid food, and he (the baby) urinated on him. He called for water and sprinkled it over (the urine)
Hadith No. 524
Sunan Ibn Majah
Gradings:
Al-Albani:
Sahih
Muhammad Fouad Abd al-Baqi:
Sahih
Shuaib Al Arnaut:
Sahih
Zubair Ali Zai:
Sahih - Bukhari And Muslim