Al-Hujurat · 49:6

6. O those who have faith in Allah and act upon whatever He legislates! If a wrongdoer brings some news about a group of people to you, then verify the truth of that news and do not hasten towards accepting it, in fear that if you accept it without verifying it, you could harm a group of people ignorantly. Then after having harmed them, you will regret it when the falsehood of the news becomes clear to you.