the Messenger of Allah said: "The rider should move behind the Janazah and the pedestrian may walk wherever he wishes, and the (funeral) prayer should be offered for a child."
Sunan an-Nasa'i Book 21, Hadith 131
← Previous Hadith "One of the children of the Ansar (who had died) was brought to the Messenger of Allah so he prayed for him." 'Aishah said: "How fortunate he is, one of the little birds of Paradise. He never did any evil or reached the age of puberty." He said: "It is better not to say anything, O 'Aishah Allah, the Mighty and Sublime, created Paradise and created people for it, He created them in the loins of their fathers. And He created Hell and created people for it, and He created them in the loins of their fathers."

Sunan an-Nasa'i Book 21, Hadith 130 Next Hadith → "The Messenger of Allah was asked about the children of the idolators and he said: 'Allah knows best what they would have done."'

Sunan an-Nasa'i Book 21, Hadith 132