وَمَا يَتَّبِعُ أَكْثَرُهُمْ إِلَّا ظَنًّا ۚ إِنَّ الظَّنَّ لَا يُغْنِي مِنَ الْحَقِّ شَيْئًا ۚ إِنَّ اللَّهَ عَلِيمٌ بِمَا يَفْعَلُونَ (36)
(10:36) Most of them only follow conjectures; *44 and surely conjecture can be no substitute for truth. Allah is well aware of whatever they do.
*44). Those who, in disregard of God's guidance, invented religions, developed philosophies and prescribed laws to govern human life did not do this with the help of any definite knowledge that they possessed; rather, it would be the result of their conjecture and fancy. Likewise, those who followed their religious and worldly leaders did so not because they fully knew and fully understood all that the latter espoused. Rather, they followed those leaders merely on the gratuitous assumption that whatever was being taught by those great people, and whatever had been recognized as 'right1 by their own forefathers, must indeed be true.