يَا أَيُّهَا الَّذِينَ آمَنُوا اجْتَنِبُوا كَثِيرًا مِّنَ الظَّنِّ إِنَّ بَعْضَ الظَّنِّ إِثْمٌ وَلَا تَجَسَّسُوا وَلَا يَغْتَب بَّعْضُكُم بَعْضًا أَيُحِبُّ أَحَدُكُمْ أَن يَأْكُلَ لَحْمَ أَخِيهِ مَيْتًا فَكَرِهْتُمُوهُ وَاتَّقُوا اللَّهَ إِنَّ اللَّهَ تَوَّابٌ رَّحِيمٌ
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سورة الحُـجُـرات
(49/12) O you who believe (who are âmenû)! Keep away from the conjecture very much. Indeed some conjectures are sins, and do not spy (on the others’ mistakes) nor let some of you gossip about others. Does one of you like to eat the flesh of his dead brother? Of course you dislike it. And have piety towards Allah; surely Allah is the One Who accepts the repentance, the Most Merciful.
Surah Al-Hujurat