1 verse has
“serious”
in Edition Clear Qur'an by Talal Itani / Yusuf (Joseph)
12:28And when he saw that his shirt was torn from the back, he said, “This is a woman's scheme. Your scheming is serious indeed.”
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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