The Apartments - 49:6 O you who believe, if someone of evil disposition brings you news, investigate it. Otherwise you may unknowingly commit injustice against a people and then you may regret what you have done.
Related:
The Light/24:4 Those who accuse married women and cannot bring four witnesses, strike them with eighty strokes of the sword, and do not accept their testimony for ever. They are the ones who have gone astray.
The Light/24:11 A gang of you invented that slander. Do not think that it is bad for you; rather it is a good (lesson) for you. By the way, every one of them has shared the sin. And those of them who are the ringleaders deserve a great punishment.
The Light/24:12 "When you heard it, should not you believing men and women have said to each other, "This is clearly a great lie"?"
The Light/24:13 Should they not have brought four witnesses? Since they could not bring witnesses, they are liars with Allah.
The Light/24:14 Had it not been for Allah´s forgiveness and mercy to you in this world and the Hereafter, a great punishment would have touched you for what you were involved in.

The Pen/68:10 Do not follow any of them: the swearing, the vile,

The Apartments/49:6 O you who believe, if someone of evil disposition brings you news, investigate it. Otherwise you may unknowingly commit injustice against a people and then you may regret what you have done.