1 verse has
“infailliblement”
in Edition Muhammad Hamidullah / Hud (Hud)
11:22Ce sont eux, infailliblement, qui dans l'au-delà seront les plus grands perdants.
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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