1 verse has
“grain”
in Edition Muhammad Hamidullah / Luqman (Luqman)
31:16«O mon enfant, fût-ce le poids d'un grain de moutarde, au fond d'un rocher, ou dans les cieux ou dans la terre, Allah le fera venir. Allah est infiniment Doux et Parfaitement Connaisseur.
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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