Surah An-Nur (The Light), Verse 12

لَوْلَاۤ اِذْ سَمِعْتُمُوْهُ ظَنَّ الْمُؤْمِنُوْنَ وَالْمُؤْمِنٰتُ بِاَنْفُسِهِمْ خَیْرًا وَّقَالُوْا هٰذَاۤ اِفْكٌ مُّبِیْنٌ ۟

Law laaa iz sami'tumoohu zannal mu'minoona walmu'minaatu bi anfusihim khairanw wa qaaloo haazaaa ifkum mubeen

“Why did not the believers - men and women - when ye heard of the affair,- put the best construction on it in their own minds and say, "This (charge) is an obvious lie"?”

Quran 24:12 (Yusuf Ali Translation)