What is the ruling on the action of a person who received a trust (money) to deliver it to his son and wife, then used a portion of it for himself before delivering the full amount after some time, with their later knowledge of it, and what is the legitimate punishment for that in this world and the hereafter?

The money given to a man to hand over to his wife and son is a trust that he must deliver to them in full, without deduction or delay, in accordance with Allah's saying: "Indeed, Allah commands you to render trusts to whom they are due." If he neglects this and delays payment without a legitimate excuse, he commits a sin and exposes himself to worldly and otherworldly punishment.

However, if he was in need at the time he received the money, and he knew that his son had enough to suffice him, and his taking from it would not cause harm, then it is permissible for him to take from his son's share according to his need without seeking permission, due to the general meaning of the Prophet's (peace be upon him) saying: "You and your wealth belong to your father," and his saying: "Indeed, your children are among your purest earnings, so eat from their wealth."

Nevertheless, the wife and son are advised to forgive and overlook this matter to prevent disputes and preserve affection and family unity, for Allah says: "But whoever pardons and makes reconciliation - his reward is due from Allah."