Quran 49:6 from Surah Al-Hujuraat on Divine Marvels.
يَٰٓأَيُّهَا ٱلَّذِينَ ءَامَنُوٓاْ إِن جَآءَكُمۡ فَاسِقُۢ بِنَبَإٖ فَتَبَيَّنُوٓاْ أَن تُصِيبُواْ قَوۡمَۢا بِجَهَٰلَةٖ فَتُصۡبِحُواْ عَلَىٰ مَا فَعَلۡتُمۡ نَٰدِمِينَ
English translation: O you who believe O you who believe O you who believe If comes to you a wicked person with information investigate lest you harm a people in ignorance then you become over what you have done regretful
Transliteration: yaayyuha alladhina amanu in jaakum fasiqun binaba-in fatabayyanu an tusibu qawman bijahalatin fatus'bihu ala ma fa'altum nadimina