From the sayings of PROPHET MUHAMMAD SAW
Hajj of a child is valid (Along with parents or guardian)
- If they are too young to understand these prerequisites then the guardian can perfom these on thier behalf
E.g:When he has completed his own circumbulation he can take his child on his shoulder for circumambulation
But after attaining puberty if hajj became obligatory on such a child then he must perform hajj again
