Sura al-Ḥujurāt 49:12

يَٰٓأَيُّهَا ٱلَّذِينَ ءَامَنُوا۟ ٱجْتَنِبُوا۟ كَثِيرًا مِّنَ ٱلظَّنِّ إِنَّ بَعْضَ ٱلظَّنِّ إِثْمٌ وَلَا تَجَسَّسُوا۟ وَلَا يَغْتَب بَّعْضُكُم بَعْضًا أَيُحِبُّ أَحَدُكُمْ أَن يَأْكُلَ لَحْمَ أَخِيهِ مَيْتًا فَكَرِهْتُمُوهُ وَٱتَّقُوا۟ ٱللَّـهَ إِنَّ ٱللَّـهَ تَوَّابٌ رَّحِيمٌ

yā-ayyuhā lladhīna āmanū ijtanibū kathīran mina l-ẓanni inna baʿḍa l-ẓanni ithmun wa-lā tajassasū wa-lā yaghtab baʿḍukum baʿḍan a-yuḥibbu aḥadukum an yakula laḥma akhīhi maytan fa-karihtumūhu wa-ittaqū allāha inna allāha tawwābun raḥīmun

O ye who believe! Avoid suspicion as much (as possible): for suspicion in some cases is a sin: And spy not on each other behind their backs. Would any of you like to eat the flesh of his dead brother? Nay, ye would abhor it...But fear Allah: For Allah is Oft-Returning, Most Merciful.