1 verse has
“dunas”
in Edition Samir El-Hayek / Al-Muzzammil (The Enshrouded One)
73:14Será o dia em que haverão de tremer a terra e as montanhas, e haverão de se converter, as montanhas, em dunas dispersas.
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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