Is it permissible for a father to sell surplus medications allocated to him by the company and use the proceeds to buy personal necessities for himself and his family?

The permissibility of an employee disposing of excess medicine beyond their needs depends on the company's terms or customs. If the employee is obligated to return the surplus, then it is not permissible for them to benefit from it by selling, gifting, or giving it to others, except with the company's permission. However, if they are not obligated to return it, then they may dispose of it as they wish, because it has become their lawful property.