Allah swt., Conferring reason to all human beings who are superior human beings compared to His other creatures. By using the wisdom of man can make things that can ease their affairs in the world. But everything that man has is of course there are limitations so there are boundaries that should not be passed. Although Islam is very concerned and glorifies the intellect, it does not surrender everything to the intellect, even Islam limits the scope of reason according to its ability, because the reason is limited in its reach, it will not be possible to reach the essence of all things. So Islam subjects reason to the Revelation and the Sunnah of the Prophet , meaning in all things the revelation and the sunnah should be first.