﴿ لَوْ خَرَجُوا۟ فِيكُم مَّا زَادُوكُمْ إِلَّا خَبَالًۭا وَلَأَوْضَعُوا۟ خِلَٰلَكُمْ يَبْغُونَكُمُ ٱلْفِتْنَةَ وَفِيكُمْ سَمَّٰعُونَ لَهُمْ ۗ وَٱللَّهُ عَلِيمٌۢ بِٱلظَّٰلِمِينَ ﴾

“Had these [hypocrites] set out with_ you, [O believers,] they would have added nothing to you save the evil of corruption, and would surely have scurried to and fro in your midst, seeking to stir up discord among you, seeing that there are in your midst such as would have lent them ear: but God has full knowledge of the evildoers.”

In the fifth (47) verse, it was explained that the hypocrites had procured the permission to stay away from Jihad by deceit and now it was better that they just did not participate in it. Had they gone there, they would have done nothing but hatch conspiracies, circulate rumors and spread disorder. The Qur'anic statement: وَفِيكُمْ سَمَّاعُونَ لَهُمْ (And among you there are their listeners) means that, among Muslims, there were some simple people too, people who could be easily taken advantage of and who may have likely been affected by their false rumors.