Muhammad ibn al-Hasan said: “It is only appropriate for him to repeat it if he prayed it after morning had arrived, because when the morning has come, the time for the obligatory prayer becomes constrained, and it is not permissible for him to perform a supererogatory prayer. So if he performs it, he is required to repeat it because he has prayed it outside of its proper time.” That which clarifies what we have presented is:
Commentary #40