Paying rent for borrowing a car belonging to some inheritors who include some minors

Q 3: A person died, leaving three female heirs and a three-year-old boy. His inheritance included a pick-up truck, which was with one of his cousins, being the husband of one of the inheriting daughters of the deceased. Allah (Exalted be He) willed that I needed the above-mentioned pick-up truck. I asked the mentioned person to lend it to me for ten days to use it in transporting students and some objects. After the ten days, I returned it to him as intact as I had taken it. However, I deeply regretted this act, because the pick-up truck is not owned by this person, but is owned by the heirs, including a girl and a boy, who have no one to sustain them except benevolent people. Then, I decided to calculate the daily rent of the truck for ten days based on the rates of the car rent offices. However, I was puzzled about the following:to whom should I give this rent: the girl, the boy, all of the heirs, or pay it as Sadaqah (voluntary charity) for the deceased, or the owner of the truck, taking into consideration that they all can afford their living, except (Part No. 11; Page No. 206) the boy, the girl and their mother? I hope you will advise me.

A: You should pay the rent of the truck for the ten days and give the money to all the heirs, unless the legally accountable persons among them generously grant you their portion of the rent. The portion of the underage persons should be given to their Wakil (legal accountable person who acts on behalf of another for specific permissible matters).May Allah grant us success. May peace and blessings be upon our Prophet Muhammad, his family and Companions.