Mukhtasar Bukhari (Abridged) 167 — Is children’s urine impure?

Narrated from Umm Qais bint Mihsan (may Allah be pleased with her) that she brought her young child, who did not eat food, to the Messenger of Allah (peace and blessings be upon him). The Messenger of Allah (peace and blessings be upon him) seated the child in his lap, and the child urinated on his clothes. So the Messenger of Allah (peace and blessings be upon him) called for water and sprinkled it over the spot, and did not wash it.