It wasnarrated from Jabir that the Messenger of Allah (ﷺ) said:
"If thechild has cired, the (funeral) prayer should be offered forhim (ifhe dies) and he is an heir." (ES)
English reference (ES): Vol. 4, Book 23, Hadith 2750 (ES)
Arabic reference (ES): Book 23, Hadith 2855 (ES)