1 verse has
“كدحا”
in Edition Simple Clean / Al-Inshiqaaq (The Splitting Open)
6:84يا أيها الإنسان إنك كادح إلى ربك كدحا فملاقيه
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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