Yunus - ১০:৩৬

وَمَا يَتَّبِعُ أَكْثَرُهُمْ إِلاَّ ظَنًّا إَنَّ الظَّنَّ لاَ يُغْنِي مِنَ الْحَقِّ شَيْئًا إِنَّ اللّهَ عَلَيمٌ بِمَا يَفْعَلُونَ
[10:36]
And most of them do not follow (anything) but conjecture; surely conjecture will not avail aught against the truth; surely Allah is cognizant of what they do.
But most of them follow nothing but fancy: truly fancy can be of no avail against truth. Verily Allah is well aware of all that they do.
Most of them follow not but conjecture. Assuredly conjecture can by no means take the place of truth. Lo! Allah is Aware of what they do.