2 verses have
“dur”
in Edition Muhammad Hamidullah / Al-Qalam (The Pen)
68:13au cœur dur, et en plus de cela bâtard.
68:48Endure avec patience la sentence de ton Seigneur, et ne sois pas comme l'homme au Poisson [Jonas] qui appela (Allah) dans sa grande angoisse.
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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