These two types of objects have volume and quantity, but that they are different from each other. The difference between them is that Satan is not visible to humans. Owing to its delicacy or subtlety, it is able acquire different shapes and forms and it can infiltrate anything and go anywhere it wishes. But man is visible to Satan and it is not possible for him to change his mode and place of existence quickly because he is subject to gradual motion. "Nakuba kungithokozisa ukuba nolwazi oluncane ngamanye amaqembu kodwa okubaluleke kakhulu kimina ukwazi iqembu lami njengoba ngizazi. Manje sengiyaliqonda isiko le qembu, ngiyazi ukuthi yini engiyifunayo, kumele silungise maphi amaphutha. Ngihlalelwe ukufundisa abadlali abasha indlela engifuna badlale ngayo. Abafana bami badlale kahle kwiCarling, sibe nebhadi, bekumele sinqobe,” kusho uZinnbauer. O Messenger, let them not grieve you who hasten into disbelief of those who say, "We believe" with their mouths, but their hearts believe not, and from among the Jews. [They are] avid listeners to falsehood, listening to another people who have not come to you. They distort words beyond their [proper] usages, saying "If you are given this, take it; but if you are not given it, then beware." But he for whom Allah intends fitnah - never will you possess [power to do] for him a thing against Allah. Those are the ones for whom Allah does not intend to purify their hearts. For them in this world is disgrace, and for them in the Hereafter is a great punishment.