Surah Al-Hujurat, Verse 6

يَٰٓأَيُّهَا ٱلَّذِينَ ءَامَنُوٓاْ إِن جَآءَكُمۡ فَاسِقُۢ بِنَبَإٖ فَتَبَيَّنُوٓاْ أَن تُصِيبُواْ قَوۡمَۢا بِجَهَٰلَةٖ فَتُصۡبِحُواْ عَلَىٰ مَا فَعَلۡتُمۡ نَٰدِمِينَ٦

yāayyuhā alladhīna āmanū in jāakum fāsiqun binaba-in fatabayyanū an tuṣībū qawman bijahālatin fatuṣ'biḥū ʿalā mā faʿaltum nādimīna

O you who have believed, if there comes to you a disobedient one with information, investigate, lest you harm a people out of ignorance and become, over what you have done, regretful.