1 verse has
“Fersen”
in Edition A. S. F. Bubenheim and N. Elyas / Al-Muminoon (The Believers)
23:66Meine Zeichen wurden euch bereits verlesen. Aber ihr pflegtet auf euren Fersen kehrtzumachen,
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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