Is it considered a religious sin for an employee to purchase discounted clothing from the company they work for and then resell it for profit, knowing that their contract contains a clause prohibiting them from engaging in trade, even if the company implicitly allows this?

If the employer has a clear interest in preventing the employee from engaging in business outside of working hours, the employee must adhere to the condition; otherwise, not. However, if the employer is aware of the employees' violation and remains silent, and sells them discounted goods in commercial quantities, this indicates consent and serves as explicit permission. Permission can be explicit through words, gestures, or writing, or it can be implicit through silence in certain cases where custom dictates it or circumstantial evidence supports it, as stated in the Kuwaiti Fiqh Encyclopedia.