Adding extra money for one child so that the investment for both children will be equal

Q: I've got two sons. They're toddlers. 

My elder son received alot of money as a gift when he was a baby while the second one didn't receive as much. I was thinking of converting their cash to gold. Will it be okay for me to give money to add only to the younger one so I can get the same amount of gold for each child or will it be unfair to the older child? 

We will not inform them of this when they are older.

A: It is permissible.

And Allah Ta'ala (الله تعالى) knows best.

Answered by:

Mufti Ebrahim Salejee (Isipingo Beach)