﴿ وَلَوْ نَشَآءُ لَأَرَيْنَٰكَهُمْ فَلَعَرَفْتَهُم بِسِيمَٰهُمْ ۚ وَلَتَعْرِفَنَّهُمْ فِى لَحْنِ ٱلْقَوْلِ ۚ وَٱللَّهُ يَعْلَمُ أَعْمَٰلَكُمْ ﴾

“Now had We so willed, We could have shown them clearly to thee, so that thou wouldst know them for sure as by a visible mark: but [even so,] thou wilt most certainly recognize them by the tone of their voice. And God knows all that you do, [O men;]”

(And if We would, We could show them unto thee) O Muhammad by singling them out with an evil mark (so that thou shouldst know them surely by their marks. And thou shalt know them by the burden of their talk) by the way they talk and try to find excuses. (And Allah knoweth your deeds) your secrets, enmity and hatred towards Allah and His Messenger.