What is the Islamic legal method for restoring a son’s right, and is his money a debt or a trust? And should he reclaim 800,0 Syrian Pounds or its equivalent in gold, given that he verbally authorized his maternal uncle to manage his money in the housing association, and the uncle withdrew part of the money without his knowledge at the time, out of fear for him?

If a man appointed his maternal uncle to handle the دفتر (notebook/registry), and the uncle managed it well, then he is not liable for guarantee, as Allah Almighty says: (There is no blame upon the doers of good). However, he made a mistake by giving money to his sister without the son's permission.

The uncle is obligated to return the remaining money in his possession, as it is a trust for which he is not liable unless there is transgression or negligence. He must also guarantee what he gave to his sister if it was without the son's permission, and he must compensate for the deficit in value with dollars or gold.

However, a mother may take from her son's money if she is in need, as long as it does not harm him. So, if the mother took from the money held by the uncle due to her need, the son has no right to claim that amount, because the uncle spent it on the mother of the owner of the money, which is her rightful due.