Sprinkling water on a garment soiled with the urine of a baby boy

 187. Umm Qais bint Mihsan narrated that she came to the Messenger of Allah salla alayhi wa sallam with her son who was not yet weaned. ´Ubaidullah said: She informed me that her son urinated in the lap of the Messenger who asked for water and sprinkled it over his garment (but) he did not wash it.