2 verses have
“إِفْكٌۭ”
in Edition Uthmani / Al-Ahqaf (The Dunes)
11:46وَقَالَ ٱلَّذِينَ كَفَرُوا۟ لِلَّذِينَ ءَامَنُوا۟ لَوْ كَانَ خَيْرًۭا مَّا سَبَقُونَآ إِلَيْهِ ۚ وَإِذْ لَمْ يَهْتَدُوا۟ بِهِۦ فَسَيَقُولُونَ هَٰذَآ إِفْكٌۭ قَدِيمٌۭ
28:46فَلَوْلَا نَصَرَهُمُ ٱلَّذِينَ ٱتَّخَذُوا۟ مِن دُونِ ٱللَّهِ قُرْبَانًا ءَالِهَةًۢ ۖ بَلْ ضَلُّوا۟ عَنْهُمْ ۚ وَذَٰلِكَ إِفْكُهُمْ وَمَا كَانُوا۟ يَفْتَرُونَ
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Those who spend their wealth by night and day, privately and publicly, will receive their reward from their Lord. They have nothing to fear, nor shall they grieve.
The Holy Quran · Al-Baqara (The Cow) · 2:274