#1061
اللهُـمِّ اجْعَلْـهُ لَنا فَرَطـاً وَسَلَـفاً وَأَجْـراً
Transliteration
Allāhumma’j`alhu lanā faraṭan, wa salafan, wa ajra.
Translation
O Allah, make him for us a precursor, a forerunner and a cause of reward.
Dua #1061•Al-Hasan (Al-Basri) used to recite Surat Al-Fatihah for a child's funeral and then say this. Al-Bukhari, Kitabul-Jana'iz, p. 65.
When the deceased is a child, during the funeral prayer
Hisnul Muslim