How does a child enter Paradise, and will he be deprived of some of its delights, such as the Houris, taking into account His saying, the Almighty: "And Allah is never unjust to His servants"?

Children in Paradise will not remain young as they were in this world; rather, their age will be thirty-three years, and similarly for all the people of Paradise. There is another opinion that children who died young are the immortalized youths (wildan mukhalladun) in Paradise, who serve its inhabitants, but the more preponderant view is that they will be thirty-three years of age.