´Ali bin Abi Talib (may Allah be pleased with him) narrated that :` the Messenger of Allah said, about urine of a male child that suckles: "The urine of the boy is sprinkled, and the girl's urine is washed." Qatadah (one of the narrators) said: "This is so, as long as they do not eat, when they eat, then both of them are washed."
Hadith Referenceسنن ترمذي / أبواب السفر / 610
Hadith Gradingالألبانی:صحيح، ابن ماجة (525) | زبیر علی زئی:(610) إسناده ضعيف /د 377۔378، جه 525