Mishkatul Masabih — Hadith #39736

In the manner of Imam Bukhari (RA) ta'liqb (i.e. Sahih al-Bukhari's Tarjmat al-Babe quoted this hadith without the Sanad), Hasan (RA) used to recite Surah Al Fa-Tihah in the funeral prayer (after the first takbeer) of the child. (And in the third takbeer) he used to recite this dua, "All-Hummaj 'alhu lana- Salafan wa Faratwan wa Zukhran wa Azran" (meaning O Allah! Make this boy (on the Day of Qiyaamah) our forerunner, guarded treasure and cause of reward). .[1]