Sunan Ibn Majah
1507
Sahih+3

Abu Jubair bin Hayyah narrated that he heard Mughirah bin Shu’bah say:“I heard the Messenger of Allah (ﷺ) say: ‘The (funeral) prayer should be offered for a child.’”

SahihAl-Albani
SahihMuhammad Fouad Abd al-Baqi