2 verses have
“وَٰحِدَةًۭ”
in Edition Uthmani / Saad (The letter Saad)
15:38وَمَا يَنظُرُ هَٰٓؤُلَآءِ إِلَّا صَيْحَةًۭ وَٰحِدَةًۭ مَّا لَهَا مِن فَوَاقٍۢ
23:38إِنَّ هَٰذَآ أَخِى لَهُۥ تِسْعٌۭ وَتِسْعُونَ نَعْجَةًۭ وَلِىَ نَعْجَةٌۭ وَٰحِدَةٌۭ فَقَالَ أَكْفِلْنِيهَا وَعَزَّنِى فِى ٱلْخِطَابِ
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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