In Book 2 of Jalaluddin Rumi's Masnavi, during the interrogation of Iblis (Satan), Mu'awiya dismantles the devil's claim of having performed a righteous act by waking him for prayer. Mu'awiya argues that a being's actions are inextricably bound to its inherent nature and disposition. To illustrate this immutable law, he uses a series of vivid metaphors: one cannot extract sweetness from vinegar, gather a mighty army from the cowardly, find the scent of musk in dung, or seek dry bricks in a flowing stream. Because Iblis's fundamental essence is deception and enmity toward spiritual wakefulness, Mu'awiya concludes that Satan is entirely incapable of genuinely guiding anyone toward goodness. Thus, any outward appearance of virtue must inherently be a mask for deeper treachery.