All praise be to Allah Alone, and peace and blessings be upon His Messenger, and his family and Companions.
In the case where someone touches a child who is wet because of Najasah (impurity), if such wetness leaves a damp trace, and the child is a young girl or a boy who is old enough to eat solid foods; then they should wash the parts of the body and clothes that got soiled along with the place that got wetted. But if the child is a young boy who has not yet eaten solid foods, some water should be sprinkled over the place of impurity, for it is authentically reported on the authority of
Abu Al-Samh (may Allah be pleased with him), the servant of the Messenger of Allah (peace be upon him), that the Prophet (peace be upon him) said:
“The urine of a baby girl should be washed and the urine of a baby boy should be sprinkled over with water.”
However, in a case where there is no wetness, the original state of the body and place is Taharah (purity) which cannot be overruled unless there is substantial Najasah.May Allah grant us success. May peace and blessings be upon our Prophet Muhammad, his family, and Companions.