[Pooya/Ali Commentary 75:2] Nafs lawwama, the self-reproaching conscience, feels conscious of evil the human soul is entangled with due to the promptings of nafs ammara which is prone to evil, and, if not checked and controlled by the self-reproaching conscience, leads to perdition. Lawwama prompts a person to resist the evil, and ask for Allah's pardon and grace after repentance and making amends, with hope to reach salvation. Nafs mutma-inna is the highest stage of tranquillity and satisfaction which is achieved when the human soul surrenders itself completely to the will of Allah.