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." (RU)
English reference (RU): Vol. 4, Book 23, Hadith 2750 (RU)
Arabic reference (RU): Book 23, Hadith 2855 (RU)