2 verses have
“sonst”
in Edition A. S. F. Bubenheim and N. Elyas / Ash-Shu'araa (The Poets)
26:156Fügt ihr nichts Böses zu, sonst überkommt euch die Strafe eines gewaltigen Tages."
26:213So rufe neben Allah keinen anderen Gott an, sonst wirst du zu den Gestraften gehören.
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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