Hadith 6:784
Waki' narrated to us, from Sa'id ibn 'Ubayd Allah, from Ziyad ibn Jubayr, from his father, from al-Mughirah ibn Shu'bah, that the Messenger of Allah (may Allah bless him and grant him peace) said: "The funeral prayer is performed over the child."
حدثنا وكيع عن سعيد بن عبيد الله عن زياد بن جبير عن أبيه عن المغيرة بن شعبة أن رسول الله صلى الله عليه وسلم قال الطفل يصلي عليه