Yunus 10:36

Wama yattabiAAu aktharuhum illathannan inna aththanna layughnee mina alhaqqi shay-an inna Allaha AAaleemunbima yafAAaloon

And most of them follow not except assumption. Indeed, assumption avails not against the truth at all. Indeed, Allāh is Knowing of what they do.

Most of them follow nothing but conjectures. Surely, conjectures are of no avail in the matter of truth at all. Certainly, Allah is fully aware of what they do.