Sayyida Aisha (may Allah be pleased with her) narrates: Children used to be brought to the Prophet (peace and blessings be upon him) so that he would supplicate for them, and once a child urinated on him. The Prophet (peace and blessings be upon him) sprinkled water over the urine.
Hadith Referenceالمنتقى ابن الجارود / كتاب الطهارة / 140