2 verses have
“فَسَتَعْلَمُونَ”
in Edition Uthmani / Al-Mulk (The Sovereignty)
17:67أَمْ أَمِنتُم مَّن فِى ٱلسَّمَآءِ أَن يُرْسِلَ عَلَيْكُمْ حَاصِبًۭا ۖ فَسَتَعْلَمُونَ كَيْفَ نَذِيرِ
29:67قُلْ هُوَ ٱلرَّحْمَٰنُ ءَامَنَّا بِهِۦ وَعَلَيْهِ تَوَكَّلْنَا ۖ فَسَتَعْلَمُونَ مَنْ هُوَ فِى ضَلَٰلٍۢ مُّبِينٍۢ
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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