1 verse has
“mentre”
in Edition Hamza Roberto Piccardo / Adh-Dhaariyat (The Winnowing Winds)
51:44Trasgredirono l'ordine del loro Signore. Li colpì una folgore mentre ancora guardavano,
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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