Surah Al-Hujurat, Verse 6

يَٰٓأَيُّهَا ٱلَّذِينَ ءَامَنُوٓاْ إِن جَآءَكُمۡ فَاسِقُۢ بِنَبَإࣲ فَتَبَيَّنُوٓاْ أَن تُصِيبُواْ قَوۡمَۢا بِجَهَٰلَةࣲ فَتُصۡبِحُواْ عَلَىٰ مَا فَعَلۡتُمۡ نَٰدِمِينَ ﴿٦﴾

Ya eyyühellezine amenu in caeküm fazikum bi nebein fe tebeyyenu en tüsıybu kavmem bi cehaletin fe tusbihu ala ma fealtüm nadimın

“O ye who believe! If a wicked person comes to you with any news, ascertain the truth, lest ye harm people unwittingly, and afterwards become full of repentance for what ye have done”