1 verse has
“يَوْمَئِذٍۢ”
in Edition Uthmani / Al-Muddaththir (The Cloaked One)
9:74فَذَٰلِكَ يَوْمَئِذٍۢ يَوْمٌ عَسِيرٌ
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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