Allamah Alusi (Rahimahullah) states in Tafsir Ruhul Ma’ani that one should repent immediately after committing a sin because sin creates darkness and due to this darkness, Iblis makes the heart his headquarters. If you keep him in control for a long time, many sins will be committed. Therefore, illuminate the heart by repenting quickly and shedding tears of regret. Shaytan will then have to flee. Just as a bat survives in darkness, similarly, shaytan also has the same nature. He survives in the darkness of sins. If you delay in repenting, he will remain there for longer. Do you wish to keep your enemy for a long while in your home? Therefore, if you repent quickly, shaytan will flee due to the noor of taubah.