49:6
يَـٰٓأَيُّهَا ٱلَّذِينَ ءَامَنُوٓا۟ إِن جَآءَكُمْ فَاسِقٌۢ بِنَبَإٍ فَتَبَيَّنُوٓا۟ أَن تُصِيبُوا۟ قَوْمًۢا بِجَهَـٰلَةٍ فَتُصْبِحُوا۟ عَلَىٰ مَا فَعَلْتُمْ نَـٰدِمِينَ
yāayyuhā alladhīna āmanū in jāakum fāsiqun binaba-in fatabayyanū an tuṣībū qawman bijahālatin fatuṣ'biḥū ʿalā mā faʿaltum nādimīna
Believers, if a troublemaker brings you news, check it first, in case you wrong others unwittingly and later regret what you have done,
O you who believe! If a Fâsiq (liar - evil person) comes to you with any news, verify it, lest you should harm people in ignorance, and afterwards you become regretful for what you have done.