1 verse has
“incredulidad”
in Edition Julio Cortes / Al-Kahf (The Cave)
18:80Y en cuanto al muchacho, sus padres eran creyentes y tuvimos miedo de que les impusiera su rebeldía e incredulidad,
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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