It was narrated that ‘Ali (رضي الله عنه) said: The Messenger of Allah (ﷺ) said: `The urine of a boy is to be sprinkled with water and the urine of a girl is to be washed.` Qatadah said: That is if they are not yet eating solid food; if they are eating solid food then their urine is to be washed in both cases.