伊斯兰信仰建立在理性思考的坚实基础之上。穆斯林禁止对自己的信仰存有任何怀疑，在信仰（'aqeedah）问题上的任何盲目追随都是受谴责的。安拉（SWT）说：

The Islamic creed is built upon the solid foundations of rational thought. The Muslim is forbidden from having any doubt in his or her belief, and any type of blind following in the matter of ‘aqeedah is condemned. Allah (swt) says,.

“当有人对他们说：‘你们当遵循安拉所降示的经典。’他们却说：‘我们只遵循我们祖先所遵循的。’难道即便他们的祖先毫无理智，也不接受正道，他们仍然要遵循吗？”（古兰经 2:170）

“And when it is said to them : ‘Follow that which Allah has revealed,’ they say : ‘We follow that wherein we found our fathers.’ What! Even though their fathers were wholly unintelligent and devoid of guidance!” [TMQ 2:170].

伊斯兰的"aqeedah"建立在理性之上。正因如此，它确认了我们存在的真实本质，而不是像kuffar那样否认它。安拉(SWT)说：

The Islamic ‘aqeedah is based upon the mind. By this, it confirms the true nature of our existence rather than seeking to deny it like the kuffar. Allah (swt) says,.

“在天地的创造、昼夜的更替、船只在海上航行以利于人类、真主从天空降下的雨水借以使死去的大地复活并在其中散布各种动物、风与云在天地之间顺服地运行之中，确有迹象给有理智的人们。”[TMQ 2:164]

“Lo in the creation of the heavens and the earth and the difference of night and day and the ships which run upon the sea with that which is of use to men, and the water which Allah sends down from the sky thereby reviving the earth after its death and dispersing all kinds of beasts therein, and in the ordinance of the winds and the clouds obedient between heaven and earth, these are signs for people who have sense.” [TMQ 2:164].