It is narrated from Sayyiduna Abdullah bin Amr (may Allah be pleased with them both) that "an infant boy was brought to the Messenger of Allah (peace and blessings be upon him), and he urinated on him (peace and blessings be upon him), so he (peace and blessings be upon him) sprinkled (water over) it; and an infant girl was brought, and she too urinated on him (peace and blessings be upon him), so he (peace and blessings be upon him) washed it (with water)."
No one narrated this hadith through the chain of Amr bin Shu'ayb (may Allah have mercy on him), from his father, from his grandfather, except Usamah bin Zayd (may Allah have mercy on him), and Abdullah bin Musa (may Allah have mercy on him) is alone in narrating it from him.
Hadith Referenceالمعجم الأوسط / باب الألف / 824
Hadith Gradingمحدثین:إسناده حسن
Hadith Takhrij«قال الهيثمي: إسناده حسن «مجمع الزوائد ومنبع الفوائد، ج 1، ص 285»» «قال الطبراني: لم يروه عن عمرو عن أبيه عن جده إلا أسامة تفرد به عبد الله بن موسى «الإعلام بسنته عليه الصلاة والسلام بشرح سنن ابن ماجه الإمام، ج 2، ص 162»» «أخرجه ابن ماجه فى «سننه» برقم: 527، وأحمد فى «مسنده» برقم: 28013، 28122، 28280، والطبراني فى «الكبير» برقم: 408»