Sahih Bukhari
Sahih Bukhari Volume 001, Book 004, Hadith Number 222.
Hadith Section/Book: Sahih Bukhari Sahih Bukhari Book 04. Ablutions (Wudu')
Narated By 'Aisha : (The mother of faithful believers) A child was brought to Allah's Apostle and it urinated on the garment of the Prophet. The Prophet asked for water and poured it over the soiled place.