[Sources of Knowledge (continued)]
وَأَمَّا الْعَقْلُ: فَهْوَ سَبَبُ لِلْعِلْمِ أَيْضاً، وَمَا ثَبَتَ مِنْهُ بِالْبَدِيهَةِ فَهُوَ ضَرُورِيٌّ، كالْعِلْمَ بِأَنَّ كُلَّ الشَّيْءِ أَعْظَمُ مِنْ جُزْئِهِ. وَمَاَ ثَبَتَ منه بِالاسْتِدْلاَلِ فَهُوَ اَكْتِسَابِيُّ.
Then as for reason (ʿaql): it is a source of knowledge also; and whatever of it is established by self-evident perception (badīhī) is necessary, just as the knowledge that the whole of a thing is greater than the part of it. Whatever is established by deduction (istidlāl) is acquired (kasb).