Quran 49, Al-Hujurat (The Private Chambers) ⓘ
49:6O ye who believe! If an evil-liver bring you tidings, verify it, lest ye smite some folk in ignorance and afterward repent of what ye did.
يَا أَيُّهَا الَّذِينَ آمَنُوا إِنْ جَاءَكُمْ فَاسِقٌ بِنَبَإٍ فَتَبَيَّنُوا أَنْ تُصِيبُوا قَوْمًا بِجَهَالَةٍ فَتُصْبِحُوا عَلَى مَا فَعَلْتُمْ نَادِمِينَ