3 verses have
“أَفَلَا”
in Edition Uthmani / Hud (Hud)
24:11۞ مَثَلُ ٱلْفَرِيقَيْنِ كَٱلْأَعْمَىٰ وَٱلْأَصَمِّ وَٱلْبَصِيرِ وَٱلسَّمِيعِ ۚ هَلْ يَسْتَوِيَانِ مَثَلًا ۚ أَفَلَا تَذَكَّرُونَ
30:11وَيَٰقَوْمِ مَن يَنصُرُنِى مِنَ ٱللَّهِ إِن طَرَدتُّهُمْ ۚ أَفَلَا تَذَكَّرُونَ
51:11يَٰقَوْمِ لَآ أَسْـَٔلُكُمْ عَلَيْهِ أَجْرًا ۖ إِنْ أَجْرِىَ إِلَّا عَلَى ٱلَّذِى فَطَرَنِىٓ ۚ أَفَلَا تَعْقِلُونَ
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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