1 verse has
“verbessern”
in Edition A. S. F. Bubenheim and N. Elyas / Aal-i-Imraan (The Family of Imraan)
3:89außer denjenigen, die nach alledem bereuen und verbessern, so ist Allah Allvergebend und Barmherzig.
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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