Is it permissible for the one to whom money was donated to help those affected by a car accident to dispose of the remaining money after the injured have recovered and there are no financial claims, knowing that he is poor and has children? And is it permissible for someone else to dispose of this money without his permission?

If people donated money to the driver and designated it for treating the injured and consoling the families of the deceased, then any remaining amount with him from this money is not for him to take for himself or dispose of, except with the permission of the donors. However, if they gave him the money without specifying its use, then he may take from it for his needs. No one other than the designated recipient has the right to dispose of this money except with his permission or the permission of the donors.