The Messenger of Allah said: "The urine of a boy should be sprinkled over and the urine of a girl should be washed."
Sunan Ibn Majah Book 1, Hadith 261
← Previous Hadith "I was a servant of the Prophet, and Hasan and Husain was brought to him and (the infant) urinated on his chest. They wanted to wash it, but the Messenger of Allah said: 'Sprinkle water on it, for the urine of a girl should be washed, but the urine of a boy should be sprinkled over with water.'"

Sunan Ibn Majah Book 1, Hadith 260 Next Hadith → A Bedouin urinated in the mosque, and some of the people rushed at him. The Messenger of Allah said: "Do not interrupt him." Then he called for a bucket of water and poured it over (the urine).

Sunan Ibn Majah Book 1, Hadith 262